US Bridges

West Rocks Road over Route 15

Fair

Fairfield County, Connecticut · RTE 15 under West Rock RD · Structure no. 00722

Built
1938
87 years old, rebuilt 2019
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
91 ft
1 main span
Daily traffic
5,000
2020 count
Owner
State
State Highway Agency

About this bridge

West Rocks Road over Route 15 is a steel stringer/multi-beam or girder carrying West Rocks Road over Route 15 in Fairfield County, Connecticut. It was built in 1938 and reconstructed in 2019, so it is 87 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 6 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 5,000 vehicles a day, roughly 5% of them trucks, projected to reach 7,430 by 2040. The structure is 91 ft (27.6 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesWest Rocks Road
CrossesRoute 15
LocationRTE 15 under West Rock RD
RouteCity Street 0
CountyFairfield County
StateConnecticut
Coordinates41.14553, -73.41746
Functional classUrban Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length91 ft (27.6 m)
Longest span82 ft (25.1 m)
Deck width36 ft (11 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2020)
Projected traffic7,430 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was West Rocks Road over Route 15 built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 2019.

What condition is West Rocks Road over Route 15 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 November 2023.

How much traffic does West Rocks Road over Route 15 carry?

About 5,000 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is West Rocks Road over Route 15?

The structure is 91 ft (27.6 m) long with a longest span of 82 ft (25.1 m) and a deck 36 ft wide.

Who owns West Rocks Road over Route 15?

It is owned by the State Highway Agency.