US Bridges

River Road over Hammonasset River

Fair

New Haven County, Connecticut · 0.1 MI S of Nod Road · Structure no. 04855

Built
1935
90 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
67 ft
2 main spans
Daily traffic
2,833
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

River Road over Hammonasset River is a concrete tee beam carrying River Road over Hammonasset River in New Haven County, Connecticut. It was built in 1935, so it is 90 years old, older than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,833 vehicles a day, roughly 7% of them trucks, projected to reach 4,210 by 2043. The structure is 67 ft (20.4 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRiver Road
CrossesHammonasset River
Location0.1 MI S of Nod Road
RouteCity Street 0
CountyNew Haven County
StateConnecticut
Coordinates41.29055, -72.56477
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating32.2 US tons
Inventory rating24.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length67 ft (20.4 m)
Longest span31 ft (9.4 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,833 (2023)
Projected traffic4,210 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was River Road over Hammonasset River built?

It was built in 1935, making it 90 years old in 2025.

What condition is River Road over Hammonasset River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does River Road over Hammonasset River carry?

About 2,833 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is River Road over Hammonasset River?

The structure is 67 ft (20.4 m) long with a longest span of 31 ft (9.4 m) and a deck 35 ft wide.

Who owns River Road over Hammonasset River?

It is owned by the Town or Township Highway Agency.