Browse Bridge Database

2,549 bridges in the FHWA National Bridge Inventory in New Hampshire.

National Bridge Inventory Database

Browse 2,549 bridges from the Federal Highway Administration National Bridge Inventory. Filter by state, condition rating, or search by name and location.

Bridge	Location	Condition	Year Built	Length	ADT
SALMON BROOK	New Hampshire	Good	1955	6.1 m	128,889
ACCESS ROAD	New Hampshire	Fair	1950	10.7 m	86,429
HACKETT HILL ROAD	New Hampshire	Fair	1978	21.0 m	86,013
CROSS ROAD	New Hampshire	Fair	1956	10.1 m	82,029
RAMP A-B	New Hampshire	Fair	1957	14.3 m	79,640
DOW ROAD	New Hampshire	Fair	1957	9.1 m	78,501
ROBINSON ROAD	New Hampshire	Fair	1957	10.1 m	78,501
GREELEY STREET	New Hampshire	Good	1993	33.8 m	78,063
MAPLEWOOD AVENUE	New Hampshire	Fair	1970	21.9 m	76,465
SOUHEGAN RIVER	New Hampshire	Good	1953	69.8 m	75,081
BABOOSIC BROOK	New Hampshire	Good	1954	9.4 m	75,081
US 3 MANCHESTER STREET	New Hampshire	Good	2000	73.5 m	75,054
PISCATAQUA RIVER	New Hampshire	Fair	1971	409.7 m	74,766
PREBLE WAY CSX	New Hampshire	Fair	1971	551.7 m	74,766
NASHUA RIVER	New Hampshire	Fair	1955	103.0 m	73,979
NH 9 LOUDON ROAD	New Hampshire	Fair	1966	26.2 m	72,557
NASHUA RIVER	New Hampshire	Good	1959	103.0 m	71,221
MARKET STREET	New Hampshire	Good	1970	32.6 m	70,573
N BR PISCATAQUOG RIVER	New Hampshire	Good	2016	41.1 m	69,164
SHAWAYTTUCK	New Hampshire	Good	1983	14.6 m	68,236
RAMP 3B	New Hampshire	Good	1997	37.2 m	66,228
S BR PISCATAQUOG RIVER	New Hampshire	Good	2016	60.8 m	63,919
I-293 NB ON RAMP	New Hampshire	Good	2016	21.3 m	63,919
GOSLING ROAD	New Hampshire	Good	1993	34.4 m	59,897
CANAL SERVICE ROAD	New Hampshire	Fair	1955	63.4 m	59,758
CANAL SERVICE ROAD	New Hampshire	Good	1959	63.4 m	58,948
MERRIMACK R NH 3A CSX	New Hampshire	Good	2011	371.9 m	57,651
FEE TPK SB OFF RAMPS	New Hampshire	Good	1996	59.4 m	56,330
NH 28 BYPASS	New Hampshire	Good	1961	25.9 m	55,538
TOWER HILL ROAD	New Hampshire	Fair	1964	8.2 m	52,392
NH111A	New Hampshire	Good	2011	42.4 m	52,370
FEE TPK SB OFF RAMPS	New Hampshire	Good	1996	74.1 m	51,849
GRANITE STREET	New Hampshire	Good	2007	71.6 m	51,344
MERRIMACK RIVER CSX	New Hampshire	Good	1973	235.3 m	50,841
CSX	New Hampshire	Good	1972	23.8 m	48,687
PENNICHUCK BROOK	New Hampshire	Fair	1954	27.4 m	48,402
MERRIMACK RIVER CSX RD	New Hampshire	Fair	1976	251.8 m	48,395
STEVENS POND	New Hampshire	Fair	1977	343.5 m	48,294
CANDIA ROAD	New Hampshire	Fair	1960	25.6 m	47,490
CANDIA ROAD	New Hampshire	Fair	1960	25.3 m	47,490
HANOVER STREET	New Hampshire	Fair	1960	25.3 m	47,490
HANOVER STREET	New Hampshire	Fair	1960	25.0 m	47,490
NH 38	New Hampshire	Good	2013	40.2 m	47,376
PELHAM ROAD	New Hampshire	Good	2014	47.2 m	47,252
NH111A	New Hampshire	Good	2014	41.1 m	47,252
NH 38	New Hampshire	Good	2013	40.5 m	47,229
CSX	New Hampshire	Good	1972	23.8 m	47,148
SOUTH STREET	New Hampshire	Poor	1959	16.8 m	46,612
STARK WAY	New Hampshire	Poor	1956	9.1 m	46,106
SPIT BROOK ROAD	New Hampshire	Good	1993	45.7 m	46,106

Frequently Asked Questions

The National Bridge Inventory (NBI) is a federal database maintained by the Federal Highway Administration containing inspection data for all bridges on public roads in the U.S. with a span of more than 20 feet. Bridge owners must inspect each structure at least every 24 months.

ADT stands for Average Daily Traffic — the average number of vehicles crossing the bridge per day. Bridges are sorted by ADT by default because high-traffic bridges in poor condition pose the greatest risk to the most people.

Yes. Use the search field above to find bridges by name, location, or features crossed. You can also combine the search with state and condition filters to narrow your results.