US Bridges

Route 15 over Silvermine Avenue

FairPosted for load

Fairfield County, Connecticut · 0.5 MI S of US Route 7 · Structure no. 00717

Built
1938
87 years old
Condition
Fair
inspected October 2023
Type
Frame
Concrete
Length
39 ft
1 main span
Daily traffic
72,400
2022 count
Owner
State
State Highway Agency

About this bridge

Route 15 over Silvermine Avenue is a concrete frame carrying Route 15 over Silvermine Avenue in Fairfield County, Connecticut. It was built in 1938, 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for other load-capacity restriction.

It carries about 72,400 vehicles a day, roughly 1% of them trucks, projected to reach 107,579 by 2042. The structure is 39 ft (11.9 m) long and 66 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRoute 15
CrossesSilvermine Avenue
Location0.5 MI S of US Route 7
RouteState Highway 15
CountyFairfield County
StateConnecticut
Coordinates41.1387, -73.44089
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span33 ft (10.1 m)
Deck width66 ft (20.1 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic72,400 (2022)
Projected traffic107,579 by 2042
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Route 15 over Silvermine Avenue built?

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

What condition is Route 15 over Silvermine Avenue 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 October 2023.

How much traffic does Route 15 over Silvermine Avenue carry?

About 72,400 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Route 15 over Silvermine Avenue?

The structure is 39 ft (11.9 m) long with a longest span of 33 ft (10.1 m) and a deck 66 ft wide.

Who owns Route 15 over Silvermine Avenue?

It is owned by the State Highway Agency.