Hillsborough County, New Hampshire bridges
Hillsborough County has 385 bridges and culverts in the National Bridge Inventory, the oldest built in 1892. 31 (8%) are rated poor. The most common type is stringer/multi-beam or girder (53%).
- Bridges
- 385
- Good
- 52%
- Fair
- 40%
- Poor
- 8%
- 31 bridges
- Average age
- 52.4 yrs
- Posted or closed
- 15
Map of bridges in Hillsborough County
Green good, amber fair, red poor. Click a marker for details.Search bridges in Hillsborough County
Type at least two characters, or pick a condition or type, to search every bridge in the county.
Condition
Good52%(201)
Fair40%(153)
Poor8%(31)
When they were built
Busiest
- Fee Tpk N&s Ramps over Salmon BrookGood128,889 vehicles/day
- Fee Tpk over Greeley StreetGood78,063 vehicles/day
- Fee Tpk over Souhegan RiverGood75,081 vehicles/day
- Fee Tpk over Baboosic BrookGood75,081 vehicles/day
- US 3 Fee Tpk NB over Nashua RiverFair73,979 vehicles/day
Longest
- Fair
- Fair
- Good
- Fair
- I-93 SB over Stevens PondFair1,127 ft
Oldest
- Allds Street over Salmon BrookFairBuilt 1892
- NH149 over Contoocook RiverFairBuilt 1893
- Nh 3A So Main ST over Piscataquog RiverGoodBuilt 1894
- Main Street over Beaver BrookPoorBuilt 1900
- Cohas Avenue over Cohas BrookGoodBuilt 1900
All bridges in Hillsborough County
Busiest first · showing 1–200 of 385| Bridge | Location | Built | Type | Length | Daily traffic | Condition |
|---|---|---|---|---|---|---|
| Fee Tpk N&s Ramps over Salmon Brook No. 017701220007300 | 3.3 MI N Mass Sl | 1955 | Culvert | 20 ft | 128,889 | Good |
| Fee Tpk over Greeley Street No. 016801130008900 | At Merrimack Interchange | 1993 | Stringer/Multi-beam or Girder | 111 ft | 78,063 | Good |
| Fee Tpk over Souhegan River No. 016801110011500 | 0.8 MI from Baboosic RD | 1953 | Stringer/Multi-beam or Girder | 229 ft | 75,081 | Good |
| Fee Tpk over Baboosic Brook No. 016801160014000 | 2.9 MI from Bedford T.L. | 1954 | Culvert | 31 ft | 75,081 | Good |
| US 3 Fee Tpk NB over Nashua River No. 017701010011800 | 0.3 MI from Nh 130 | 1955 | Stringer/Multi-beam or Girder | 338 ft | 73,979 | Fair |
| US 3 Fee Tpk SB over Nashua River No. 017701000011800 | 0.2 MI from Service RD | 1959 | Stringer/Multi-beam or Girder | 338 ft | 71,221 | Good |
| I-293 Fee Tpk over N Br Piscataquog River No. 016101430006600 | .3 MI Second ST | 2016 | Stringer/Multi-beam or Girder | 135 ft | 69,164 | Good |
| Fee Tpk NB Ramp 4 over Ramp 3B No. 017701340007300 | .02 MI from Robinson RD | 1997 | Stringer/Multi-beam or Girder | 122 ft | 66,228 | Good |
| I-293 Fee Tpk over S Br Piscataquog River No. 016101450006500 | .8 MI Bedford Tl | 2016 | Stringer/Multi-beam or Girder | 199 ft | 63,919 | Good |
| I-293 Fee Tpk over I-293 NB on Ramp No. 016101490006200 | .6 MI Bedford Tl | 2016 | Tee Beam | 70 ft | 63,919 | Good |
| US 3 Fee Tpk NB over Canal Service Road No. 017701010011200 | 0.5 MI from Nh 130 | 1955 | Stringer/Multi-beam or Girder | 208 ft | 59,758 | Fair |
| US 3 Fee Tpk SB over Canal Service Road No. 017701000011200 | 0.5 MI from Nh 130 | 1959 | Stringer/Multi-beam or Girder | 208 ft | 58,948 | Good |
| Wieczorek DR over Merrimack R Nh 3A CSX No. 001902090008500 | 1 Mile West of Mht | 2011 | Stringer/Multi-beam or Girder | 1,220 ft | 57,651 | Good |
| Fee Tpk NB on Ramp over Fee Tpk SB Off Ramps No. 017701450005700 | 1.2 MI N Mass Sl | 1996 | Stringer/Multi-beam or Girder | 195 ft | 56,330 | Good |
| NH101 over Nh 28 Bypass No. 016101130014800 | .2 MI W. Auburn T.L. | 1961 | Stringer/Multi-beam or Girder | 85 ft | 55,538 | Good |
| Fee Tpk SB Ramp over Fee Tpk SB Off Ramps No. 017701440005700 | 1.2 MI N Mass Sl | 1996 | Stringer/Multi-beam or Girder | 243 ft | 51,849 | Good |
| I-293 Fee Tpk over Granite Street No. 016101340006600 | 0.7 MI N JCT Rt 3 | 2007 | Stringer/Multi-beam or Girder | 235 ft | 51,344 | Good |
| Circumferential WB over Merrimack River CSX No. 017701570005900 | Nashua-Hudson Tl | 1973 | Stringer/Multi-beam or Girder | 772 ft | 50,841 | Good |
| Fee Tpk NB over Pennichuck Brook No. 016801070004200 | Nashua-Merrimack Tl | 1954 | Stringer/Multi-beam or Girder | 90 ft | 48,402 | Fair |
| I-93 NB over Merrimack River CSX RD No. 016100590008700 | At Manchester-Hooksett Tl | 1976 | Stringer/Multi-beam or Girder | 826 ft | 48,395 | Fair |
| I-93 SB over Stevens Pond No. 016101240011900 | 0.1 MI N Bridge St. | 1977 | Stringer/Multi-beam or Girder | 1,127 ft | 48,294 | Fair |
| I-93 SB NH101 WB over Hanover Street No. 016101380012500 | 1.8MI W JCT RTE 28 a | 1960 | Stringer/Multi-beam or Girder | 82 ft | 47,490 | Fair |
| I-93 NB NH101 EB over Hanover Street No. 016101380012600 | 1.8 MI W JCT RTE 28 a | 1960 | Stringer/Multi-beam or Girder | 83 ft | 47,490 | Fair |
| I-93 SB NH101 WB over Candia Road No. 016101440012500 | 2.2 MI W JCT Rt 28 Bypass | 1960 | Stringer/Multi-beam or Girder | 84 ft | 47,490 | Fair |
| I-93 NB NH101 EB over Candia Road No. 016101440012600 | 2.2 MI W JCT Rt 28 Byp | 1960 | Stringer/Multi-beam or Girder | 83 ft | 47,490 | Fair |
| I-293 Fee Tpk over Stark Way No. 016100910006300 | 1.9MI S Hooksett T.L. | 1956 | Frame | 30 ft | 46,106 | Poor |
| US 3 Fee Tpk SB over Spit Brook Road No. 017701450003700 | .5 MI from Mass S.L. | 1995 | Stringer/Multi-beam or Girder | 156 ft | 46,106 | Good |
| US 3 Fee Tpk NB over Spit Brook Road No. 017701460003700 | 0.5 MI from Mass Sl. | 1993 | Stringer/Multi-beam or Girder | 150 ft | 46,106 | Good |
| I-293 WB NH101 WB over Nh 28A No. 016101740011800 | 1 MI E JCT RTE 28 | 1961 | Stringer/Multi-beam or Girder | 84 ft | 46,087 | Fair |
| I-293 WB NH101 over Frontage RD Csx(abd) No. 016101800008900 | 0.6 MI E JCT RTE 3A | 1958 | Stringer/Multi-beam or Girder | 154 ft | 45,058 | Good |
| I-293 WB NH101 over Nh 3A Brown Ave No. 016101850007700 | 1.2MI W JCT RTE 28 | 2004 | Stringer/Multi-beam or Girder | 152 ft | 45,058 | Good |
| I-293 EB NH101 EB over Nh 28A No. 016101750011800 | 1.0 MI E JCT Rt 28 | 1961 | Stringer/Multi-beam or Girder | 72 ft | 44,507 | Fair |
| Fee Tpk SB over Pennichuck Brook No. 016801060004200 | Nashua-Merrimack T.L. | 1954 | Stringer/Multi-beam or Girder | 90 ft | 44,365 | Poor |
| I-293 NB NH101 WB over Merrimack River CSX No. 001901990012900 | Manchester Tl | 1960 | Stringer/Multi-beam or Girder | 923 ft | 44,010 | Fair |
| Circumferential EB over Merrimack River CSX No. 017701570005800 | Nashua-Hudson Tl | 2000 | Stringer/Multi-beam or Girder | 741 ft | 43,572 | Good |
| I-93 SB over Wellington Road No. 016101190011500 | 0.2 MI E JCT RTE 28 | 1976 | Stringer/Multi-beam or Girder | 145 ft | 42,435 | Good |
| I-93 NB over Wellington Road No. 016101180011700 | 0.2 MI E JCT RTE 28 | 1976 | Stringer/Multi-beam or Girder | 146 ft | 42,094 | Fair |
| I-293 SB NH101 EB over Merrimack River CSX No. 001901990012800 | Manchester Tl | 1960 | Stringer/Multi-beam or Girder | 923 ft | 41,914 | Fair |
| I-293 EB NH101 over Frontage RD Csx(abd) No. 016101810008900 | 0.6MI E JCT RTE 3A | 1958 | Stringer/Multi-beam or Girder | 154 ft | 41,914 | Good |
| I-293 EB NH101 over Nh 3A Brown Ave No. 016101860007700 | 1.2MI W. JCT RTE 28 | 2004 | Stringer/Multi-beam or Girder | 152 ft | 41,914 | Good |
| I-93 SB over Bodwell Road No. 016101850013100 | 3.2 MI S.W JCT Rt 28 | 1962 | Stringer/Multi-beam or Girder | 163 ft | 40,868 | Good |
| I-293 Fee Tpk over Hackett Hill Road No. 016100620006200 | .2MI S Hooksett T.L. | 1956 | Culvert | 33 ft | 40,862 | Fair |
| I-93 NB I-93 Ramp over Cohas Brook No. 016101790012800 | 1.6 MI E JCT Rt 28 | 1962 | Culvert | 41 ft | 38,772 | Fair |
| I-93 NB over Bodwell Road No. 016101850013200 | 3.2 MI SW JCT RT28 | 1962 | Stringer/Multi-beam or Girder | 148 ft | 38,772 | Good |
| I-93 NB over Cohas Brook No. 016101870013400 | 1.6MI E JCT Rt 28 | 1962 | Stringer/Multi-beam or Girder | 153 ft | 38,772 | Good |
| I-93 NB over Cohas Brook No. 016102000014300 | .4MI N Londonderry T.L. | 1962 | Culvert | 30 ft | 38,772 | Good |
| I-93 NB over Stevens Pond No. 016101230011800 | 0.1 MI N Bridge St. | 1977 | Stringer/Multi-beam or Girder | 1,010 ft | 36,942 | Fair |
| NH101 WB over Fee Tpk No. 001901860013100 | .3 MI JCT Rt 3 | 1993 | Stringer/Multi-beam or Girder | 177 ft | 35,647 | Fair |
| Nh 28 over I-293 NH101 No. 016101760009900 | 1.8 MI N Londonderry Tl | 1960 | Stringer/Multi-beam or Girder | 173 ft | 35,231 | Good |
| NH111 over US 3 Fee Tpk No. 017701020009000 | 0.02 MI from NH111-A | 1998 | Stringer/Multi-beam or Girder | 283 ft | 34,337 | Fair |
| I-93 SB over Merrimack River CSX RD No. 016100600008600 | Manchester-Hooksett Tl | 1976 | Stringer/Multi-beam or Girder | 826 ft | 34,000 | Fair |
| I-293 EB NH101 EB over Fee Tpk No. 001901860013200 | .3 MI E JCT US 3 | 1993 | Stringer/Multi-beam or Girder | 270 ft | 33,533 | Good |
| Fee Tpk over Wieczorek DR No. 001901950008500 | 1/4 Mile South from Toll | 2010 | Stringer/Multi-beam or Girder | 196 ft | 29,696 | Good |
| I-93 SB over Stevens Pond No. 016101270012200 | 0.1 MI N Bridge ST | 1976 | Stringer/Multi-beam or Girder | 629 ft | 28,328 | Fair |
| I-93 SB over Bridge Street No. 016101280012400 | 1.2 MI W JCT NH28 Byp | 1977 | Stringer/Multi-beam or Girder | 66 ft | 28,328 | Fair |
| NH130 Broad Street over US 3 Fee Tpk No. 017700970012100 | .2 MI from Coliseum Ave | 1999 | Stringer/Multi-beam or Girder | 215 ft | 26,909 | Fair |
| Circ HWY WB over Daniel Webster HWY No. 017701510005700 | .3 MI East Fee Tpk | 1993 | Stringer/Multi-beam or Girder | 128 ft | 26,815 | Fair |
| I-93 SB over I-293 Ebn No. 016101690012400 | 1.4 MI E JCT Nh 28 | 1961 | Stringer/Multi-beam or Girder | 85 ft | 26,271 | Good |
| I-93 SB over I-93 NB Off Ramp No. 016101780012600 | 1.5 MI E JCT Rt 28 | 1962 | Stringer/Multi-beam or Girder | 66 ft | 26,271 | Good |
| I-93 SB over Cohas Brook No. 016101790012600 | 1.5 MI E JCT Rt 28 | 1962 | Culvert | 40 ft | 26,271 | Fair |
| I-93 NB over NH101 WB Sbe Ramp No. 016101260012600 | 0.05 MI N JCT Bridge ST | 1977 | Stringer/Multi-beam or Girder | 471 ft | 25,082 | Fair |
| I-93 NB over Bridge Street No. 016101280012600 | 1.2 MI W JCT Nh 28 Byp | 1977 | Stringer/Multi-beam or Girder | 85 ft | 25,082 | Fair |
| NH101 WB over US 3 No. 001901820013200 | NH101 WB over US 3 | 2006 | Stringer/Multi-beam or Girder | 164 ft | 24,986 | Good |
| NH101 WB over I-293(RAMP D) No. 001901840013200 | .2 MI JCT Rt 3 | 1959 | Stringer/Multi-beam or Girder | 153 ft | 24,986 | Fair |
| NH101 over Nh 13 No. 017201280010500 | 1 MI S Milford Village | 1976 | Stringer/Multi-beam or Girder | 113 ft | 24,280 | Good |
| NH101 over Ponemah Hill Road No. 017201420010600 | 0.8 M W Amherst T.L. | 1971 | Frame | 49 ft | 24,280 | Good |
| I-293 Nh 3A Tpk N over Black Brook No. 016100990006700 | 2.5 S Hooksett Tl | 1956 | Stringer/Multi-beam or Girder | 74 ft | 24,101 | Poor |
| US 3 Nh 3A over I-293 Nh 3A CSX Merr R No. 016101510006500 | 0.7 MI Bedford Tl | 1923 | Truss - Deck | 1,186 ft | 22,640 | Fair |
| I-293 Nh 3A Tpk S over Black Brook No. 016100990006600 | 2.5MI S Hooksett T.L. | 1956 | Stringer/Multi-beam or Girder | 74 ft | 22,005 | Poor |
| East Dunstable RD over Fee Tpk Ramp 4CD No. 017701230007300 | 0.01 MI from Salmon Bk | 1996 | Stringer/Multi-beam or Girder | 221 ft | 21,720 | Fair |
| Granite Street over Merrimack River No. 016101330006900 | 0.5 MI from Winter Street | 1981 | Stringer/Multi-beam or Girder | 471 ft | 21,111 | Good |
| NH101A over Fee Tpk No. 017701000013500 | 0.01 MI Cypress Lane | 1999 | Stringer/Multi-beam or Girder | 228 ft | 20,508 | Good |
| I-293 Fee Tpk SB over Nh 3A No. 016100900006100 | 2.MI S Hooksett T.L. | 1956 | Stringer/Multi-beam or Girder | 197 ft | 20,431 | Good |
| I-293 Fee Tpk NB over Nh 3A No. 016100900006200 | 2.MI S Hooksett T.L. | 1957 | Stringer/Multi-beam or Girder | 195 ft | 20,431 | Good |
| NH101 EB over US 3 No. 001901830013100 | NH101 EB over US 3 | 2006 | Stringer/Multi-beam or Girder | 170 ft | 20,158 | Good |
| NH101 EB over Bridge Street No. 016101280012700 | 1.2 MI W. JCT RTE 28 Byp | 1961 | Stringer/Multi-beam or Girder | 60 ft | 19,964 | Fair |
| NH101 over Joe English Brook No. 000700930013900 | 1.15 MI SW Bedford Tl | 1936 | Slab | 22 ft | 19,233 | Fair |
| NH101 over Pulpit Brook No. 001900910006500 | .1 Mile from Amherst Tl | 2023 | Box Beam or Girders - Multiple | 53 ft | 19,233 | Good |
| US202 NH101 over Contoocook River No. 020800860007600 | 2.5 Mi. W. Dublin Tl | 2024 | Stringer/Multi-beam or Girder | 186 ft | 18,622 | Good |
| Circ HWY EB over Daniel Webster HWY No. 017701510005600 | .3 MI East Fee Tpk | 1993 | Stringer/Multi-beam or Girder | 128 ft | 18,109 | Fair |
| NH101A Bp Somerset over Fee Tpk No. 017700970015200 | 1.3 MI FR Merrimack Tl | 1989 | Stringer/Multi-beam or Girder | 178 ft | 17,949 | Good |
| Salmon Street WB over Merrimack River CSX RD No. 016101060007200 | .3MI W JCT US 3 | 1970 | Stringer/Multi-beam or Girder | 858 ft | 17,799 | Fair |
| NH101 over Perry Road No. 017200830012400 | 0.3 MI W JCT RTE 13 | 1978 | Stringer/Multi-beam or Girder | 70 ft | 17,533 | Fair |
| NH101 over Osgood Road No. 017201120011300 | 1.0 MI W JCT Nh 13. | 1977 | Stringer/Multi-beam or Girder | 70 ft | 17,533 | Fair |
| Wieczorek DR over US 3 No. 001902030008300 | .4 M West of I-93 | 2011 | Stringer/Multi-beam or Girder | 144 ft | 17,401 | Good |
| NH111 WB over Merrimack River No. 013101090006800 | .1 MI West of JCT Rt 3A | 1970 | Stringer/Multi-beam or Girder | 602 ft | 17,275 | Fair |
| NH101 WB over I-93 SB Off Ramp No. 016101260012500 | At Stevens Pond | 1961 | Stringer/Multi-beam or Girder | 71 ft | 17,124 | Fair |
| NH101 WB over Bridge Street No. 016101280012500 | 1.2 MI W JCT RTE 28 Byp | 1961 | Stringer/Multi-beam or Girder | 60 ft | 17,124 | Fair |
| Nh 3A Brown Ave over Cohas Brook No. 016102100007800 | 1.2 MI S of JCT I-193 | 1986 | Slab | 35 ft | 16,980 | Fair |
| Daniel Webster HWY over Nashua River No. 017701270011500 | 0.02 MI from Pearson Ave | 1925 | Arch - Deck | 158 ft | 16,730 | Fair |
| Nh 28 S Willow ST over Cohas Brook No. 016101900010000 | 1.2 MI N Londonderry Tl | 1989 | Culvert | 37 ft | 16,239 | Fair |
| NH111 EB over Merrimack River No. 013101100006800 | .1 MI West of JCT Rt 3-A | 1973 | Stringer/Multi-beam or Girder | 602 ft | 15,615 | Fair |
| I-93 NB Off Ramp over I-293 EB NH101 EB No. 016101750012100 | .1 MI E JCT RTE .3 | 1961 | Stringer/Multi-beam or Girder | 69 ft | 15,205 | Fair |
| NH101 over Merrimack Road No. 000701750009900 | 0.7 MI Milford Tl | 1969 | Stringer/Multi-beam or Girder | 72 ft | 15,196 | Good |
| NH101 over Souhegan River No. 000701880009700 | 0.04 MI Milford Tl | 1971 | Stringer/Multi-beam or Girder | 240 ft | 15,196 | Good |
| NH101 over NH101A CSX No. 017201550011500 | 0.2 MI W. Amherst T.L. | 1971 | Stringer/Multi-beam or Girder | 340 ft | 15,196 | Fair |
| Canal Street over Nashua River No. 017701390011500 | 0.6 MI from Route 3 | 1928 | Arch - Deck | 160 ft | 14,902 | Fair |
| I-93 Ebs Ramp over Cohas Brook No. 016101790012500 | 1.6 MI E JCT RTE 28 | 1962 | Culvert | 40 ft | 14,597 | Good |
| North Ramp over I-293 Fee Tpk No. 016101070006600 | .5MI from Stark Lane | 1957 | Stringer/Multi-beam or Girder | 96 ft | 14,149 | Fair |
| Harris Road over Salmon Brook No. 017701210007100 | .1 MI W of E Dunstable RD | 1955 | Culvert | 22 ft | 13,964 | Fair |
| Nh 13 NH114 over Piscataquog River No. 009500850010700 | .3 MI S JCT Rt 13 | 1928 | Arch - Deck | 94 ft | 13,570 | Fair |
| Salmon Street EB over Merrimack R CSX RD Ramp No. 016101070007200 | 0.3MI W of JCT Rt 3 | 1970 | Stringer/Multi-beam or Girder | 1,023 ft | 13,150 | Poor |
| US 3 over Souhegan River No. 016801160012000 | 0.03 MI from Railroad Ave | 1921 | Arch - Deck | 113 ft | 13,075 | Fair |
| US 3 over Baboosic Brook No. 016801180013500 | 5.9 MI N Nashua Tl | 1933 | Culvert | 30 ft | 13,024 | Poor |
| Nh 13 over Souhegan River No. 017201230013300 | 0.1 MI from Maple ST | 1931 | Arch - Deck | 112 ft | 12,799 | Poor |
| Nh 3A So Main ST over Piscataquog River No. 016101400006200 | 0.04 MI from Varney ST | 1894 | Arch - Deck | 82 ft | 12,740 | Good |
| US 3 over Fee Tpk No. 001901890012200 | 0.4 MI JCT RT101 | 2013 | Box Beam or Girders - Multiple | 205 ft | 12,556 | Good |
| Wellington Road over Valley Brook No. 016101120014300 | 0.1 Mile W of Nh 28 Byp | 2013 | Slab | 25 ft | 12,496 | Good |
| Nh 31 NH101 over Souhegan River No. 027701190011600 | 1.4 MI from Milford Tl | 1954 | Culvert | 71 ft | 12,472 | Fair |
| NH111 over Nashua River No. 012701440004200 | .7 MI from Nashua Tl | 1950 | Arch - Deck | 252 ft | 12,103 | Fair |
| NH101 over Thorntons Ferry Road No. 000701460011000 | 2.3 MI Milford Tl | 1971 | Stringer/Multi-beam or Girder | 84 ft | 11,884 | Fair |
| NH101 over Boston Post RD Beaver Bk No. 000701590010700 | 1.56 MI Milford Tl | 1969 | Stringer/Multi-beam or Girder | 136 ft | 11,884 | Fair |
| NH101 over NH122 No. 000701650010400 | 1.3 MI Milford Tl | 1969 | Stringer/Multi-beam or Girder | 173 ft | 11,884 | Good |
| South Ramp over I-293 Fee Tpk No. 016101110006600 | At Amoskeag Interchange | 1957 | Stringer/Multi-beam or Girder | 104 ft | 11,866 | Fair |
| US 3 Elm ST over Csx(abd) No. 016101440007500 | .2 MI N of JCT Rt 3A | 1915 | Stringer/Multi-beam or Girder | 74 ft | 11,812 | Fair |
| Kelley Street over Piscataquog R CSX RD No. 016101190004500 | 0.3 MI E JCT RTE 114-A | 1973 | Stringer/Multi-beam or Girder | 908 ft | 11,356 | Good |
| Bedford Road over Fee Tpk No. 016801330015600 | 1.8 MI Bedford T.L. | 1990 | Stringer/Multi-beam or Girder | 163 ft | 11,063 | Good |
| Nh 3A over Wildlife Stream No. 016102340007800 | 0.1 Mi. South of Maar | 2011 | Culvert | 26 ft | 10,291 | Good |
| C-D Road over Ramp D Toll Access DR No. 017701460005000 | 1.1 MI N Mass Sl | 1996 | Stringer/Multi-beam or Girder | 218 ft | 10,224 | Good |
| Nh 28A Mammoth RD over Cohas Brook No. 016101760011900 | 1.3 MI N Londonderry Tl | 1935 | Frame | 46 ft | 9,918 | Fair |
| Nh 9 over US202 No. 012201120005100 | JCT Nh 9/US202 | 2001 | Stringer/Multi-beam or Girder | 87 ft | 9,776 | Good |
| US202 Nh 9 over Henniker ST No. 012201650006000 | 0.8MI W Henniker T/L | 2002 | Stringer/Multi-beam or Girder | 101 ft | 9,776 | Good |
| Industrial Drive over Fee Tpk No. 016801110006200 | 1.0 Mi.Fr. Nashua T/L | 1990 | Stringer/Multi-beam or Girder | 236 ft | 9,532 | Good |
| I-293 NB Off Ramp over Merrimack River No. 016101320006800 | At Granite ST Bridge | 1983 | Tee Beam | 81 ft | 9,517 | Good |
| Fee Tpk NB Offramp over Fee Tpk SB Off Ramp No. 017701490005600 | 1/8 MI West of D W Hyw. | 2000 | Stringer/Multi-beam or Girder | 121 ft | 9,465 | Good |
| NH114 over Piscataquog River No. 017901620016900 | Goffstown Tl | 1972 | Stringer/Multi-beam or Girder | 84 ft | 9,373 | Fair |
| Front Street over Black Brook No. 016100980006400 | 2.2MI S Hooksett Tl | 1974 | Frame | 26 ft | 9,294 | Good |
| Allds Street over Salmon Brook No. 017701370009500 | .2 MI E of Main ST | 1892 | Culvert | 36 ft | 9,118 | Fair |
| Fee Tpk SB on Ramp over Fee Tpk SB Off Ramp No. 017701430004900 | 1 MI N Mass Sl | 1995 | Stringer/Multi-beam or Girder | 177 ft | 9,004 | Good |
| Ramp H over Fee Tpk No. 017701450005600 | At Exit 2 | 1993 | Stringer/Multi-beam or Girder | 828 ft | 9,004 | Fair |
| Bridge Street WB over I-293 Nh 3A CSX Merr R No. 016101220007300 | 0.4 MI from Elm ST INV#8 | 1990 | Stringer/Multi-beam or Girder | 1,540 ft | 8,778 | Fair |
| Bridge Street EB over I-293 Nh 3A CSX Merr R No. 016101230007300 | 0.4 MI from Elm ST INV#8 | 1988 | Stringer/Multi-beam or Girder | 1,540 ft | 8,778 | Fair |
| Turkey Hill Road over Souhegan River No. 016800850011900 | At Nh DOT Urban Line | 1969 | Stringer/Multi-beam or Girder | 142 ft | 8,725 | Good |
| I-293 SB Off Ramp over US 3 No. 001901810013400 | NH101/US3/I-293 Intchg | 2006 | Stringer/Multi-beam or Girder | 165 ft | 8,021 | Good |
| Nh 77 NH114 over Piscataquog River No. 026700840015100 | 1.9 MI S of Henniker Tl | 1939 | Stringer/Multi-beam or Girder | 65 ft | 7,831 | Fair |
| Grove Street over Nubanusit Brook No. 020800870008700 | 0.4 MI FR Nh RTE 123 | 1936 | Frame | 54 ft | 7,812 | Fair |
| US202 over Outlet Pratt Pond No. 020800490003900 | 0.4 MI Jaffrey Tl | 1956 | Culvert | 30 ft | 7,682 | Fair |
| NH101 over Blood Brook No. 025300940011400 | 1.6 MI from Wilton Tl | 1930 | Slab | 24 ft | 7,670 | Good |
| Lund Road over Salmon Brook No. 017701230007600 | .1 MI W of E Dunstable RD | 1950 | Culvert | 36 ft | 7,604 | Fair |
| Nh 9 Nh 31 over North Branch River No. 000901370014600 | 4.5 MI from Stoddard Tl | 1951 | Stringer/Multi-beam or Girder | 70 ft | 7,411 | Fair |
| Nh 9 over Beards Brook Beards RD No. 012201100005100 | Nh 9 at Beards Brook | 2002 | Stringer/Multi-beam or Girder | 411 ft | 7,409 | Good |
| Huse Road over I-293 NH101 No. 016101760010600 | 1.3 MI E JCT RTE 28 | 1960 | Stringer/Multi-beam or Girder | 300 ft | 7,350 | Good |
| Bedford Road over Baboosic Brook No. 016801130015900 | 1.7 MI FR Bedford Tl | 2020 | Stringer/Multi-beam or Girder | 93 ft | 7,218 | Good |
| NH101 over Blood Brook No. 025301050011300 | 2.32 Mi. E. Peterboro Tl | 1931 | Tee Beam | 23 ft | 6,922 | Fair |
| Henry Bridge Road over Piscataquog River No. 009501360010600 | 3.0 MI from Bedford Tl | 1937 | Other | 126 ft | 6,880 | Fair |
| Henry Bridge Road over Harry Brook No. 009501370010700 | Town RD | 2008 | Frame | 23 ft | 6,880 | Good |
| NH122 Main ST over NH101 No. 000701350010900 | 2.8 MI Milford Tl | 1969 | Stringer/Multi-beam or Girder | 91 ft | 6,868 | Good |
| NH122 Amherst ST over Beaver Brook No. 000701370010400 | 2.15 MI NE Milford Tl | 1940 | Culvert | 23 ft | 6,868 | Fair |
| NH122 over Souhegan River Rec Path No. 000701860010700 | 2.35 MI N Hollis Tl | 1956 | Stringer/Multi-beam or Girder | 142 ft | 6,846 | Good |
| Pine Hill Road over US 3 Fee Tpk No. 017701010012700 | .2 MI from Nh 130 | 1994 | Stringer/Multi-beam or Girder | 246 ft | 6,836 | Good |
| Nh 28A over I-93 No. 016101020010800 | 0.1 MI Hooksett Tl | 1976 | Stringer/Multi-beam or Girder | 307 ft | 6,695 | Good |
| Old Bridge Street over Beaver Brook No. 020501090008100 | 0.8 MI FR Nh RTE 38 | 1920 | Arch - Deck | 42 ft | 6,622 | Fair |
| North River Road over Souhegan River No. 017200670014000 | 300 Ft. JCT 101 | 1992 | Stringer/Multi-beam or Girder | 156 ft | 6,497 | Good |
| Wilton Road over Souhegan River No. 017200520013500 | 200 W of Elm ST (NH101) | 1917 | Arch - Deck | 152 ft | 6,406 | Fair |
| Baboosic Lake Road over Fee Tpk No. 016801070013100 | .8 MI from Souhegan R | 1954 | Stringer/Multi-beam or Girder | 167 ft | 6,359 | Poor |
| NH111A over Beaver Brook No. 020501050009900 | .43 MI N Pelham Village | 1966 | Stringer/Multi-beam or Girder | 54 ft | 6,245 | Good |
| River Road over I-93 No. 016100670009100 | 0.01 S Hook-Manch Tl | 1975 | Stringer/Multi-beam or Girder | 265 ft | 6,128 | Good |
| Main Street over Contoocook River No. 020800920008900 | 85 Ft FR Granite ST | 1940 | Frame | 86 ft | 6,119 | Good |
| Main Street over Beaver Brook No. 020501100009000 | 1.75 MI JCT 128 | 1900 | Arch - Deck | 46 ft | 6,111 | Poor |
| US202 over N Branch River No. 012201170003500 | 0.5 MI from Antrim Tl | 1988 | Frame | 112 ft | 5,929 | Good |
| US202 over Moose Brook No. 011201480009100 | 1.0 MI Greenfield Tl | 1959 | Culvert | 25 ft | 5,847 | Fair |
| US202 NH123 over Contoocook River No. 020801080011600 | 2.2 MI to Greenfield Tl | 1942 | Stringer/Multi-beam or Girder | 176 ft | 5,773 | Poor |
| Fee Tpk NB Ramp over Wieczorek DR Ramp No. 001902010008200 | 0.2 Miles West of Tpk | 2011 | Stringer/Multi-beam or Girder | 148 ft | 5,763 | Good |
| Second Street over Piscataquog (north Br) No. 016101410006600 | 0.2 MI N Queen City Brdge | 1915 | Stringer/Multi-beam or Girder | 90 ft | 5,707 | Fair |
| Second Street over Piscataquog (south Br) No. 016101420006500 | 0.2 MI N Queen City Brdge | 1991 | Stringer/Multi-beam or Girder | 130 ft | 5,707 | Good |
| NH123 NH124 over Souhegan River Byp Hist No. 018601560009400 | 1.4 MI from Greenville Tl | 2015 | Stringer/Multi-beam or Girder | 167 ft | 5,564 | Good |
| Nh 13 over Nissitissit River No. 003400830007600 | .9 MI from Mass. S.L. | 1947 | Culvert | 31 ft | 5,547 | Fair |
| I-293 NB Off Ramp over I-293 Nh 3A Fee Tpk No. 016101520006200 | 1.5 E JCT Rt 28 | 2016 | Stringer/Multi-beam or Girder | 246 ft | 5,504 | Good |
| Willow Street over Beaver Brook No. 020501050006900 | 0.27 Mi. Rte. 30 | 2019 | Stringer/Multi-beam or Girder | 106 ft | 5,306 | Good |
| I-293 Fee Tpk Ramp over S Br Piscataquog River No. 016101460006500 | 0.7 MI Bedford T.L. | 1957 | Stringer/Multi-beam or Girder | 215 ft | 5,245 | Good |
| US202 NH123 over Ferguson Brook No. 011201320004300 | .07 Mi. from Peterboro Tl | 1959 | Culvert | 25 ft | 5,082 | Fair |
| Water Street over Factory Access Road No. 017701260011200 | 0.13 MI FR Main ST | 1962 | Stringer/Multi-beam or Girder | 179 ft | 5,082 | Fair |
| US 3 Cd Road over Spit Brook Road No. 017701470003700 | 0.5 MI North Mass Sl | 1993 | Stringer/Multi-beam or Girder | 149 ft | 4,911 | Fair |
| Daniel Webster HWY over US 3 Fee Tpk NB Ramp No. 017701370007600 | 0.02 MI from Robinson RD | 1955 | Stringer/Multi-beam or Girder | 64 ft | 4,903 | Good |
| Nh 13 over S Br Piscataquog River No. 017901030010300 | 0.8 MI S of JCT RTE 136 | 1947 | Frame | 61 ft | 4,887 | Fair |
| Ridge Road over Salmon Brook No. 017701040003500 | .5 MI W of E Dunstable RD | 1998 | Culvert | 26 ft | 4,876 | Good |
| NH128 over Beaver Brook No. 020500670016000 | Windham Tl | 1935 | Frame | 34 ft | 4,824 | Good |
| Goffs Falls Road over Csx(abd) No. 016101880009200 | 0.3 MI West JCT Nh 28 | 2021 | Culvert | 26 ft | 4,712 | Good |
| Nh 77 over Canal 2 Choate Bk No. 026701590017800 | 1.0 MI W Dunbarton T.L. | 1960 | Stringer/Multi-beam or Girder | 453 ft | 4,701 | Fair |
| Wire Road over Fee Tpk No. 016801140014000 | 0.5 MI Baboosic Road | 1954 | Stringer/Multi-beam or Girder | 178 ft | 4,571 | Fair |
| Nh 31 over Souhegan River No. 027700770005200 | .3 MI from Greenville Tl | 1951 | Culvert | 59 ft | 4,552 | Fair |
| NH149 over Contoocook River No. 012201440003300 | .1 Mi. from Jct. US 202 | 1893 | Frame | 246 ft | 4,507 | Fair |
| Boston Post Road over Souhegan River No. 000701930013000 | 1.9 MI Merrimack Tl | 1977 | Stringer/Multi-beam or Girder | 88 ft | 4,409 | Fair |
| Nh 31 over Blood Brook No. 027701020009500 | 0.2 MI from JCT RTE 101 | 1937 | Frame | 46 ft | 4,387 | Fair |
| Nh 13 over Whittle Brook No. 009500840010400 | 1.6 MI NE New Boston Tl | 1932 | Frame | 24 ft | 4,360 | Fair |
| NH130 over Village Brook No. 003400910007600 | .5 MI JCT Rt 13 | 1935 | Frame | 23 ft | 4,273 | Fair |
| Nh 31 over Stony Brook No. 027701070014100 | 1.5 MI FM Lyndeborough Tl | 1928 | Frame | 26 ft | 3,863 | Fair |
| Nh 13 over S Br Piscataquog River No. 017900960009400 | .1 MI from JCT Rt 136 | 1937 | Stringer/Multi-beam or Girder | 63 ft | 3,777 | Fair |
| Island Pond Road over I-93 SB I-293 WB No. 016101660012400 | .6 MI E JCT RTE 28A | 2009 | Stringer/Multi-beam or Girder | 140 ft | 3,640 | Good |
| Island Pond Road over I-93 NB I-293 EB No. 016101660012500 | .6 MI E Rt 28 a | 2009 | Stringer/Multi-beam or Girder | 140 ft | 3,640 | Good |
| County Road over Souhegan River No. 016800450008900 | 0.23MI Amherst Tl | 1987 | Stringer/Multi-beam or Girder | 148 ft | 3,589 | Good |
| Boston Post Road over Beaver Brook No. 000701600010500 | .06 MI FR Nh RTE 122 | 1984 | Frame | 36 ft | 3,564 | Fair |
| South Main Street over Nissitissit River No. 003400950006100 | 1.45 MI N Mass Sl | 1931 | Frame | 28 ft | 3,553 | Good |
| Tinker Road over Pennichuck Reservoir No. 016800930003900 | At Nashua Tl | 1999 | Culvert | 24 ft | 3,502 | Good |
| Tinker Road over Fee Tpk No. 017700960015300 | 0.9 MI S Merrimack T/L | 1987 | Stringer/Multi-beam or Girder | 217 ft | 3,502 | Fair |
| Nh 31 over Stony Brook No. 027700940016200 | 0.1 MI FM Lyndeborough Tl | 1929 | Frame | 23 ft | 3,496 | Poor |
| Bodwell Road over Cohas Brook No. 016101860013400 | 0.1 MI E from I-93 NB | 1962 | Culvert | 35 ft | 3,494 | Fair |
| Elm Street over Nubanusit Brook No. 020800840009000 | 0.04 MI FR Main ST | 2003 | Stringer/Multi-beam or Girder | 40 ft | 3,391 | Fair |
| Nh 77 Truck Route over Piscataquog River No. 026700970015400 | 0.02 MI S JCT Nh 77 | 1940 | Frame | 69 ft | 3,359 | Fair |
| Ramp E(camp St) over CSX No. 016101070007100 | 0.3 MI W JCT US 3 | 1970 | Stringer/Multi-beam or Girder | 436 ft | 3,341 | Fair |
Structure types in Hillsborough County
| Stringer/Multi-beam or Girder | 204 | 53.0% |
| Culvert | 57 | 14.8% |
| Slab | 41 | 10.6% |
| Frame | 40 | 10.4% |
| Arch - Deck | 16 | 4.2% |
| Box Beam or Girders - Multiple | 10 | 2.6% |
| Tee Beam | 9 | 2.3% |
| Other | 3 | 0.8% |
| Truss - Thru | 2 | 0.5% |
| Girder and Floorbeam System | 2 | 0.5% |
| Truss - Deck | 1 | 0.3% |
Other counties in New Hampshire
- Belknap County 112
- Carroll County 193
- Cheshire County 194
- Coos County 189
- Grafton County 547
- Merrimack County 326
- Rockingham County 309
- Strafford County 136
- Sullivan County 158