US Bridges

INTERSTATE-95 over Route 121

Fair

New Haven County, Connecticut · 0.8 MI S of US Route 1 · Structure no. 00146

Built
1958
67 years old, rebuilt 1994
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
57 ft
1 main span
Daily traffic
113,500
2020 count
Owner
State
State Highway Agency

About this bridge

INTERSTATE-95 over Route 121 is a steel stringer/multi-beam or girder carrying INTERSTATE-95 over Route 121 in New Haven County, Connecticut. It was built in 1958 and reconstructed in 1994, so it is 67 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 113,500 vehicles a day, roughly 9% of them trucks, projected to reach 168,650 by 2040. The structure is 57 ft (17.4 m) long and 135 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesINTERSTATE-95
CrossesRoute 121
Location0.8 MI S of US Route 1
RouteInterstate 95
Coordinates41.23744, -73.05685
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.8 US tons
Inventory rating54.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length57 ft (17.4 m)
Longest span52 ft (15.9 m)
Deck width135 ft (41 m)
Roadway width125 ft (38.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic113,500 (2020)
Projected traffic168,650 by 2040
Trucks9%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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-95 over Route 121 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1994.

What condition is INTERSTATE-95 over Route 121 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 2023.

How much traffic does INTERSTATE-95 over Route 121 carry?

About 113,500 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is INTERSTATE-95 over Route 121?

The structure is 57 ft (17.4 m) long with a longest span of 52 ft (15.9 m) and a deck 135 ft wide.

Who owns INTERSTATE-95 over Route 121?

It is owned by the State Highway Agency.