US Bridges

Route 15 over Route 123

FairPosted for load

Fairfield County, Connecticut · Route 15 Exit No. 38 · Structure no. 00715

Built
1937
88 years old, rebuilt 1995
Condition
Fair
inspected October 2024
Type
Frame
Steel
Length
66 ft
1 main span
Daily traffic
69,900
2022 count
Owner
State
State Highway Agency

About this bridge

Route 15 over Route 123 is a steel frame carrying Route 15 over Route 123 in Fairfield County, Connecticut. It was built in 1937 and reconstructed in 1995, so it is 88 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. Its operating status is: posted for other load-capacity restriction.

It carries about 69,900 vehicles a day, roughly 8% of them trucks, projected to reach 103,864 by 2042. The structure is 66 ft (20.1 m) long and 100 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 15
CrossesRoute 123
LocationRoute 15 Exit No. 38
RouteState Highway 15
Coordinates41.13376, -73.45664
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.5 US tons
Inventory rating44.6 US tons

Structure

Structure typeFrame
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length66 ft (20.1 m)
Longest span58 ft (17.7 m)
Deck width100 ft (30.6 m)
Roadway width94 ft (28.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,900 (2022)
Projected traffic103,864 by 2042
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Route 15 over Route 123 built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1995.

What condition is Route 15 over Route 123 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 2024.

How much traffic does Route 15 over Route 123 carry?

About 69,900 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Route 15 over Route 123?

The structure is 66 ft (20.1 m) long with a longest span of 58 ft (17.7 m) and a deck 100 ft wide.

Who owns Route 15 over Route 123?

It is owned by the State Highway Agency.