US Bridges

Girder and Floorbeam System bridges in New Hampshire

Main girders along the bridge with transverse floorbeams carrying the deck, typical of larger steel bridges. New Hampshire has 30 of them, 1.2% of its bridges. Nationally this type accounts for 0.8% of all bridges.Compare states for this type.

Girder and Floorbeam System bridges
30
Poor condition
33%
10 bridges
Average age
85.7 yrs
Combined length
1 mi

Busiest girder and floorbeam system bridges in New Hampshire

Top 30 by daily traffic
BridgeCountyLocationBuiltTypeLengthDaily trafficCondition
I-93 US 4 NB over Merrimack River
No. 005201360011700
Merrimack County1.5 MI N. Jct. RT.31959Girder and Floorbeam System524 ft25,855Fair
I-93 US 4 SB over Merrimack River
No. 005201360011600
Merrimack County1.5 MI N. JCT RT31959Girder and Floorbeam System524 ft25,801Fair
US 1 over Csx(abd)
No. 011101630018400
Rockingham County0.1 MI from N Hampton Tl1936Girder and Floorbeam System120 ft14,314Poor
US 4 Nh 10 over Mascoma River CSX
No. 014400770010700
Grafton County4.3 MI Lebanon T.L.1945Girder and Floorbeam System383 ft13,685Good
Nh 16 over Saco River
No. 005401700007100
Carroll County1.6MI Albany Tl1945Girder and Floorbeam System408 ft12,188Fair
Nh 85 over CSX
No. 018301250006500
Rockingham County.45 MI SW JCT 1082006Girder and Floorbeam System110 ft5,716Good
I-93 SB over Ammonoosuc River
No. 015301870006000
Grafton County2.1 MI Bethlehem Tl1960Girder and Floorbeam System282 ft4,499Fair
I-93 NB over Ammonoosuc River
No. 015301880006000
Grafton County2 MI Bethlehem Tl1960Girder and Floorbeam System282 ft4,235Fair
Wyman Ave over Piscataqua Riv Back Chnl
No. 1NH0BR2
Rockingham County0.1 KM South of SR 1031941Girder and Floorbeam System200 ft4,000Fair
NH103 over Warner River
No. 026301440005600
Merrimack CountySutton Tl1936Girder and Floorbeam System81 ft3,778Fair
NH103 over Warner River
No. 026301450005300
Merrimack County0.1 MI from JCT I-891936Girder and Floorbeam System81 ft3,778Fair
Nh 25 NH118 over Baker River
No. 026901460012000
Grafton County3.6 MI from Rumney Tl1937Girder and Floorbeam System100 ft3,418Fair
NH104 over Smith River
No. 005801390014500
Merrimack County1.0 MI from Hill Tl1940Girder and Floorbeam System106 ft2,913Poor
NH123 over Cold River
No. 026200650010500
Cheshire County.22 MI SE Langdon Tl1919Girder and Floorbeam System59 ft2,804Fair
US 4 over Blackwater River
No. 000801430007700
Merrimack County0.3 MI from Salisbury Tl1933Girder and Floorbeam System75 ft2,652Poor
US 4 over Nhrr(abd)
No. 005801780009100
Merrimack County2.4 MI from Wilmot Tl1937Girder and Floorbeam System104 ft2,503Fair
US 4 over Smith River
No. 005801380009400
Merrimack County4.6 MI from Wilmot Tl1929Girder and Floorbeam System70 ft2,087Poor
Nh 49 over Pemigewasset River
No. 003501240012900
Grafton County0.25 MI E JCT US 31928Girder and Floorbeam System217 ft1,917Poor
Nh 18 over Connecticut River
No. 015301090013400
Grafton CountyNh-Vt Sl1934Girder and Floorbeam System533 ft1,508Poor
US 3 over Connecticut River
No. 004800300006600
Coos CountyPittsburg Tl1931Girder and Floorbeam System221 ft1,342Fair
Nh 16A over E Br Saco River
No. 001702440013800
Carroll County1.9 MI Conway Tl1928Girder and Floorbeam System80 ft1,078Poor
US 3 over West Branch Brook
No. 003501170013500
Grafton County0.6 MI from Thornton Tl1927Girder and Floorbeam System91 ft1,054Fair
Contoocook Falls R over Contoocook River
No. 012201710006400
Hillsborough County0.3 Mi. Henniker Tl1933Girder and Floorbeam System224 ft712Poor
Sharon Road over Contoocook River
No. 020800710005400
Hillsborough County1.28 MI Sharon Tl1925Girder and Floorbeam System59 ft646Fair
Nh 18 over Gale River
No. 008700700011500
Grafton County1.6 MI from Sugar Hill Tl1930Girder and Floorbeam System58 ft629Fair
Sand Hill Road over Baker River
No. 022500790009200
Grafton County.06 MI from Nh RTE 251928Girder and Floorbeam System102 ft410Poor
Smith River Road over Smith River
No. 005801240014600
Merrimack County.25 Mi. W. of Hill Tl1941Girder and Floorbeam System106 ft276Good
Smith River Road over Smith River
No. 000302070004200
Grafton County0.7 MI from Danbury T.L.1937Girder and Floorbeam System108 ft130Fair
Murphy Dam Road over Dam Spillway
No. 021000990003400
Coos County0.2 MI from US Rt 31938Girder and Floorbeam System38 ft96Poor
Eastern Corner RD over Beebe River
No. 003501850008600
Grafton County2.2MI FR Nh Route 1751920Girder and Floorbeam System70 ft96Fair

Counties with the most

Grafton County11
Merrimack County9
Rockingham County3
Carroll County2
Coos County2
Hillsborough County2
Cheshire County1
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