US Bridges

Route 77 over West River

Good

New Haven County, Connecticut · 0.3 MI N of Route 80 · Structure no. 05634

Built
1988
37 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
49 ft
3 main spans
Daily traffic
5,400
2019 count
Owner
State
State Highway Agency

About this bridge

Route 77 over West River is a concrete culvert carrying Route 77 over West River in New Haven County, Connecticut. It was built in 1988, so it is 37 years old, younger than the Connecticut average of 56.7 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 5,400 vehicles a day, roughly 3% of them trucks, projected to reach 8,024 by 2039. The structure is 49 ft (14.9 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 77
CrossesWest River
Location0.3 MI N of Route 80
RouteState Highway 77
Coordinates41.35692, -72.72086
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating46.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckOther
Main spans3
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span15 ft (4.6 m)
Deck width40 ft (12.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,400 (2019)
Projected traffic8,024 by 2039
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Route 77 over West River built?

It was built in 1988, making it 37 years old in 2025.

What condition is Route 77 over West 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 August 2023.

How much traffic does Route 77 over West River carry?

About 5,400 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Route 77 over West River?

The structure is 49 ft (14.9 m) long with a longest span of 15 ft (4.6 m) and a deck 40 ft wide.

Who owns Route 77 over West River?

It is owned by the State Highway Agency.