US Bridges

Backus Avenue over Brook

Fair

Fairfield County, Connecticut · Danbury Mall West Entran · Structure no. 06522

Built
1987
38 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
35 ft
3 main spans
Daily traffic
10,394
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Backus Avenue over Brook is a concrete culvert carrying Backus Avenue over Brook in Fairfield County, Connecticut. It was built in 1987, so it is 38 years old, younger 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 10,394 vehicles a day, roughly 4% of them trucks, projected to reach 15,444 by 2044. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBackus Avenue
CrossesBrook
LocationDanbury Mall West Entran
RouteCity Street 0
Coordinates41.37653, -73.48374
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,394 (2024)
Projected traffic15,444 by 2044
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Backus Avenue over Brook built?

It was built in 1987, making it 38 years old in 2025.

What condition is Backus Avenue over Brook 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 April 2024.

How much traffic does Backus Avenue over Brook carry?

About 10,394 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Backus Avenue over Brook?

The structure is 35 ft (10.7 m) long with a longest span of 11 ft (3.4 m).

Who owns Backus Avenue over Brook?

It is owned by the City or Municipal Highway Agency.