US Bridges

Bridge Street over Connecticut River

Good

Coos County, New Hampshire · Vermont State Line · Structure no. 024100540016300

Built
1930
95 years old, rebuilt 2018
Condition
Good
inspected May 2024
Type
Arch - Deck
Steel
Length
232 ft
1 main span
Daily traffic
500
2023 count
Owner
State
State Highway Agency

About this bridge

Bridge Street over Connecticut River is a steel arch - deck carrying Bridge Street over Connecticut River in Coos County, New Hampshire. It was built in 1930 and reconstructed in 2018, so it is 95 years old, older than the New Hampshire average of 56.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 10% of them trucks, projected to reach 740 by 2043. The structure is 232 ft (70.7 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesBridge Street
CrossesConnecticut River
LocationVermont State Line
RouteState Highway 0
Coordinates45.00792, -71.50755
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.7 US tons
Inventory rating26.1 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+10 approach)
Design loadH 15
Structure length232 ft (70.7 m)
Longest span136 ft (41.5 m)
Deck width32 ft (9.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic740 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$314,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bridge Street over Connecticut River built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2018.

What condition is Bridge Street over Connecticut River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does Bridge Street over Connecticut River carry?

About 500 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Bridge Street over Connecticut River?

The structure is 232 ft (70.7 m) long with a longest span of 136 ft (41.5 m) and a deck 32 ft wide.

Who owns Bridge Street over Connecticut River?

It is owned by the State Highway Agency.