US Bridges

INTERSTATE-691 over AMTRAK Yard & State ST

Fair

New Haven County, Connecticut · 1.9 MI West of Route 91 · Structure no. 02114

Built
1970
55 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
427 ft
5 main spans
Daily traffic
70,400
2021 count
Owner
State
State Highway Agency

About this bridge

INTERSTATE-691 over AMTRAK Yard & State ST is a prestressed concrete stringer/multi-beam or girder carrying INTERSTATE-691 over AMTRAK Yard & State ST in New Haven County, Connecticut. It was built in 1970, so it is 55 years old, younger 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 70,400 vehicles a day, roughly 9% of them trucks, projected to reach 104,607 by 2041. The structure is 427 ft (130.1 m) long and 118 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesINTERSTATE-691
CrossesAMTRAK Yard & State ST
Location1.9 MI West of Route 91
RouteInterstate 691
CountyNew Haven County
StateConnecticut
Coordinates41.54397, -72.79605
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length427 ft (130.1 m)
Longest span102 ft (31.1 m)
Deck width118 ft (36.1 m)
Roadway width102 ft (31.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70,400 (2021)
Projected traffic104,607 by 2041
Trucks9%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was INTERSTATE-691 over AMTRAK Yard & State ST built?

It was built in 1970, making it 55 years old in 2025.

What condition is INTERSTATE-691 over AMTRAK Yard & State ST 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 February 2024.

How much traffic does INTERSTATE-691 over AMTRAK Yard & State ST carry?

About 70,400 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is INTERSTATE-691 over AMTRAK Yard & State ST?

The structure is 427 ft (130.1 m) long with a longest span of 102 ft (31.1 m) and a deck 118 ft wide.

Who owns INTERSTATE-691 over AMTRAK Yard & State ST?

It is owned by the State Highway Agency.