US Bridges

Comly Avenue over Byram River

Good

Fairfield County, Connecticut · Over Byram River · Structure no. 05013

Built
1959
66 years old, rebuilt 2008
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
2,483
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Comly Avenue over Byram River is a steel stringer/multi-beam or girder carrying Comly Avenue over Byram River in Fairfield County, Connecticut. It was built in 1959 and reconstructed in 2008, so it is 66 years old, older than the Connecticut average of 56.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,483 vehicles a day, roughly 2% of them trucks, projected to reach 3,689 by 2043. The structure is 73 ft (22.3 m) long and 45 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesComly Avenue
CrossesByram River
LocationOver Byram River
RouteCity Street 0
Coordinates41.0274, -73.66171
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating82.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length73 ft (22.3 m)
Longest span68 ft (20.7 m)
Deck width45 ft (13.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,483 (2023)
Projected traffic3,689 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Comly Avenue over Byram River built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2008.

What condition is Comly Avenue over Byram River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Comly Avenue over Byram River carry?

About 2,483 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Comly Avenue over Byram River?

The structure is 73 ft (22.3 m) long with a longest span of 68 ft (20.7 m) and a deck 45 ft wide.

Who owns Comly Avenue over Byram River?

It is owned by the Town or Township Highway Agency.