Knox County, Maine bridges
Knox County has 54 bridges and culverts in the National Bridge Inventory, the oldest built in 1920. 9 (17%) are rated poor. The most common type is stringer/multi-beam or girder (31%).
- Bridges
- 54
- Good
- 28%
- Fair
- 56%
- Poor
- 17%
- 9 bridges
- Average age
- 54.1 yrs
- Posted or closed
- 2
Map of bridges in Knox County
Green good, amber fair, red poor. Click a marker for details.Search bridges in Knox County
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Condition
Good28%(15)
Fair56%(30)
Poor17%(9)
When they were built
Busiest
- Main ST over Mill CreekFair16,917 vehicles/day
- Main ST over Megunticook RiverPoor11,473 vehicles/day
- Atlantic HWY over St. George RiverFair8,570 vehicles/day
- Belfast RD over Spring BrookGood6,960 vehicles/day
- Heald HWY over ST George RiverPoor6,940 vehicles/day
Longest
- Fair
- Good
- Fair
- Poor
- Poor
Oldest
- Fitch RD over ST George RiverFairBuilt 1920
- Fairgrounds LN over ST George RiverFairBuilt 1923
- Main ST over Mill CreekFairBuilt 1924
- Payson RD over Mill StreamPoorBuilt 1929
- Main ST over Megunticook RiverPoorBuilt 1931
All bridges in Knox County
Busiest first · showing 1–54 of 54| Bridge | Location | Built | Type | Length | Daily traffic | Condition |
|---|---|---|---|---|---|---|
| Main ST over Mill Creek No. 2562 | 100 Ft W of JCT RTE 131 | 1924 | Culvert | 28 ft | 16,917 | Fair |
| Main ST over Megunticook River No. 2497 | 0.1 MI S of JCT RTE 52 | 1931 | Slab | 36 ft | 11,473 | Poor |
| Atlantic HWY over St. George River No. 2786 | 4 Mi. E. of Rte. 90 | 1991 | Stringer/Multi-beam or Girder | 256 ft | 8,570 | Fair |
| Belfast RD over Spring Brook No. 2794 | .7 MI S Tl on US 1 | 2025 | Stringer/Multi-beam or Girder | 143 ft | 6,960 | Good |
| Heald HWY over ST George River No. 5893 | 0.2 MI W of Route 235 | 1960 | Stringer/Multi-beam or Girder | 180 ft | 6,940 | Poor |
| Camden RD over ST George River No. 5654 | 1.2 MI NE US 1 | 1961 | Stringer/Multi-beam or Girder | 335 ft | 5,596 | Fair |
| Rockland RD over Medomak River No. 2541 | 2 MI E JCT RTE 220 | 1931 | Tee Beam | 55 ft | 4,890 | Fair |
| Wadsworth ST over St.George River No. 2904 | .8 MI N Townline | 2016 | Stringer/Multi-beam or Girder | 282 ft | 4,779 | Good |
| Pascal Av over Goose River No. 2724 | .5 MI S Townline | 1951 | Stringer/Multi-beam or Girder | 161 ft | 4,760 | Poor |
| Augusta RD over Davis Stream No. 2088 | 0.8 MI E JCT RTE 206 | 1932 | Tee Beam | 33 ft | 4,410 | Fair |
| Main ST over Mill Stream No. 0605 | South End of Island | 1959 | Slab | 36 ft | 4,273 | Fair |
| Main ST over Mill Stream No. 5711 | So End of Island | 1959 | Slab | 46 ft | 4,273 | Fair |
| Washington ST over Megunticook River No. 2981 | 250 Ft NW of JCT US1 | 1933 | Box Beam or Girders - Multiple | 48 ft | 4,050 | Good |
| Spruce Head RD over Weskeag River No. 2425 | 1.2 MI SW of Owls Head Tl | 2017 | Stringer/Multi-beam or Girder | 99 ft | 3,910 | Good |
| Washington ST over Megunticook River No. 5077 | 0.8 MI NW of JCT RTE US1 | 1999 | Arch - Deck | 38 ft | 2,720 | Good |
| Wadsworth ST over Maine Central Railroad No. 0606 | 0.2 MI Sly of US 1 | 1932 | Slab | 34 ft | 2,507 | Fair |
| Western RD over Back River No. 3785 | 1.8 MI SE JCT RTE 235 | 1941 | Slab | 23 ft | 2,180 | Fair |
| Western RD over Fuller Brook No. 3784 | 1.4 MI SE JCT RTE 235 | 1947 | Culvert | 45 ft | 2,150 | Poor |
| S Union RD over Brown Brook No. 5763 | 1 MI N Townline | 1959 | Slab | 53 ft | 2,108 | Fair |
| Knowlton ST over Megunticook River No. 3283 | 150 Ft N of Mechanic ST | 1935 | Tee Beam | 34 ft | 1,920 | Poor |
| Oyster River RD over Oyster River No. 2912 | 0.6 MI Nly of W JCT US1 | 2008 | Stringer/Multi-beam or Girder | 110 ft | 1,900 | Good |
| Depot ST over ST George River No. 3841 | 1 MI S Route 17 | 1947 | Stringer/Multi-beam or Girder | 70 ft | 1,872 | Fair |
| Common RD over ST George River No. 2069 | 0.4 MI SE of Rtes 17&131 | 1936 | Stringer/Multi-beam or Girder | 127 ft | 1,570 | Fair |
| Beachwood ST over Oyster River No. 6232 | 1.2 MI S of JCT RTE 90 | 1971 | Culvert | 26 ft | 1,255 | Fair |
| Waldoboro RD over Goose River No. 5265 | 2.3 MI N of JCT RTE 97 | 1952 | Slab | 26 ft | 1,240 | Fair |
| Island RD over Atlantic Ocean No. 5578 | Mainland-Spruce Head Is. | 2010 | Tee Beam | 103 ft | 900 | Good |
| Fitch RD over ST George River No. 5076 | 0.1 Mi. East RTE 131 | 1920 | Tee Beam | 108 ft | 870 | Fair |
| Main ST over Saint George River No. 3612 | 0.3 MI W JCT RTE 131 | 1939 | Stringer/Multi-beam or Girder | 215 ft | 846 | Poor |
| Rawson Av over Megunticook River No. 3173 | 250 Ft SW of JCT RTE 105 | 1935 | Slab | 38 ft | 830 | Poor |
| Jefferson RD over Davis Stream No. 3073 | 2 MI W Route 220 | 1934 | Tee Beam | 34 ft | 778 | Fair |
| Inv 1301439 RD over Fox Islands Thoroughfare No. 6344 | Atlantic Ocean | 2012 | Movable - Lift | 70 ft | 776 | Fair |
| Camden RD over ST George River No. 5529 | 0.5 MI SE of NE JCT 131 | 1953 | Stringer/Multi-beam or Girder | 60 ft | 720 | Fair |
| Pulpit Harbor RD over Mill Stream No. 2692 | No End of Island | 2017 | Girder and Floorbeam System | 131 ft | 630 | Good |
| Mill ST over Oyster River No. 5864 | .5 MI S Rt 90 | 2016 | Culvert | 26 ft | 573 | Good |
| Burkettville RD over Medomak River No. 3487 | 1.3 MI SE of Liberty Tl | 1937 | Tee Beam | 44 ft | 530 | Fair |
| Vinalhaven Ferry over Carvers Harbor No. 6351 | Atlantic Ocean | 2012 | Movable - Bascule | 70 ft | 528 | Fair |
| Middle RD over St.George River No. 3447 | 2.3 MI S Townline | 1936 | Stringer/Multi-beam or Girder | 100 ft | 520 | Fair |
| Wottons Mill RD over Quiggle Brook No. 5611 | 1.0 MI NE JCT RTE 131 | 2001 | Culvert | 28 ft | 504 | Good |
| Shepard Hill RD over Medomak River No. 6046 | Union-Washington Tl | 1966 | Culvert | 29 ft | 474 | Fair |
| Mount Battie ST over Megunticook River No. 0604 | 0.3 MI Sely of RTE 105 | 1987 | Culvert | 32 ft | 442 | Fair |
| Razorville RD over Jackson Str. (davis Str. No. 3929 | 1.5 MI E JCT 206 | 1947 | Culvert | 21 ft | 340 | Poor |
| Island Av over Tide Water No. 0603 | 1 MI S RTE 73 | 1971 | Culvert | 21 ft | 300 | Good |
| W Meadow RD over Meadow Brook No. 0594 | 0.2 MI S Lake Street | 2023 | Culvert | 23 ft | 280 | Good |
| Miller RD over Payson Brook No. 0587 | 0.4 MI SE Rt 17&235 | 1999 | Culvert | 22 ft | 267 | Fair |
| Payson RD over Mill Stream No. 2259 | .3 MI W Townline | 1929 | Slab | 26 ft | 200 | Poor |
| Sandy Shores RD over Back River No. 0591 | 1 MI W Rt 1 | 2019 | Culvert | 29 ft | 176 | Good |
| Thompson Meadow DR over Meadow Brook No. 0592 | .2 MI W Old County RD | 2019 | Culvert | 23 ft | 124 | Good |
| Lanes Island RD over Tidal Flow No. 5270 | South End of Island | 1954 | Stringer/Multi-beam or Girder | 111 ft | 116 | Fair |
| Skidmore RD over Medomak River No. 0578 | 1.5 MI N of Old Union RD | 2001 | Stringer/Multi-beam or Girder | 69 ft | 100 | Fair |
| Fitch RD over Jackson Mill Str No. 0576 | Washington | 2020 | Stringer/Multi-beam or Girder | 44 ft | 90 | Good |
| Ferry RD over Matinicus Harbor No. 6350 | Atlantic Ocean | 2012 | Movable - Lift | 30 ft | 82 | Fair |
| Fairgrounds LN over ST George River No. 6134 | 0.1 MI W Common RD | 1923 | Truss - Thru | 64 ft | 80 | Fair |
| Pulpit Harbor RD over Pulpit Harbor Cove No. 3955 | No End of Island | 2013 | Stringer/Multi-beam or Girder | 96 ft | 73 | Fair |
| Ferry Slip over Lermond Cove No. 6341 | Rockland Ferry Terminal | 2008 | Movable - Lift | 82 ft | 38 | Fair |
Structure types in Knox County
| Stringer/Multi-beam or Girder | 17 | 31.5% |
| Culvert | 13 | 24.1% |
| Slab | 9 | 16.7% |
| Tee Beam | 7 | 13.0% |
| Movable - Lift | 3 | 5.6% |
| Truss - Thru | 1 | 1.9% |
| Arch - Deck | 1 | 1.9% |
| Movable - Bascule | 1 | 1.9% |
| Box Beam or Girders - Multiple | 1 | 1.9% |
| Girder and Floorbeam System | 1 | 1.9% |