US Bridges

Case Avenue over Mad River

Fair

Litchfield County, Connecticut · At the Intersection-Rt 44 · Structure no. 05127

Built
1956
69 years old, rebuilt 2023
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
76 ft
1 main span
Daily traffic
2,030
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Case Avenue over Mad River is a steel stringer/multi-beam or girder carrying Case Avenue over Mad River in Litchfield County, Connecticut. It was built in 1956 and reconstructed in 2023, so it is 69 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 2,030 vehicles a day, roughly 2% of them trucks, projected to reach 3,016 by 2044. The structure is 76 ft (23.3 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCase Avenue
CrossesMad River
LocationAt the Intersection-Rt 44
RouteCity Street 0
Coordinates41.92095, -73.06788
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating47.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length76 ft (23.3 m)
Longest span72 ft (21.9 m)
Deck width53 ft (16.1 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,030 (2024)
Projected traffic3,016 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Case Avenue over Mad River built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2023.

What condition is Case Avenue over Mad River 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 May 2024.

How much traffic does Case Avenue over Mad River carry?

About 2,030 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Case Avenue over Mad River?

The structure is 76 ft (23.3 m) long with a longest span of 72 ft (21.9 m) and a deck 53 ft wide.

Who owns Case Avenue over Mad River?

It is owned by the Town or Township Highway Agency.