US Bridges

Al - 25 (us 411) over Little Cahaba River

Fair

St. Clair County, Alabama · .8 Mi. NO.I-20 · Structure no. 014081

Built
1947
78 years old, rebuilt 1987
Condition
Fair
inspected December 2024
Type
Tee Beam
Concrete
Length
90 ft
3 main spans
Daily traffic
22,730
2024 count
Owner
State
State Highway Agency

About this bridge

Al - 25 (us 411) over Little Cahaba River is a concrete tee beam carrying Al - 25 (us 411) over Little Cahaba River in St. Clair County, Alabama. It was built in 1947 and reconstructed in 1987, so it is 78 years old, older than the Alabama average of 51.1 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.

It carries about 22,730 vehicles a day, roughly 5% of them trucks, projected to reach 30,135 by 2044. The structure is 90 ft (27.4 m) long and 72 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesAl - 25 (us 411)
CrossesLittle Cahaba River
Location.8 Mi. NO.I-20
RouteU.S. Route 411
CountySt. Clair County
StateAlabama
Coordinates33.57, -86.51877
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.7 US tons
Inventory rating26.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width72 ft (22 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,730 (2024)
Projected traffic30,135 by 2044
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$2 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Al - 25 (us 411) over Little Cahaba River built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1987.

What condition is Al - 25 (us 411) over Little Cahaba 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 December 2024.

How much traffic does Al - 25 (us 411) over Little Cahaba River carry?

About 22,730 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Al - 25 (us 411) over Little Cahaba River?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 72 ft wide.

Who owns Al - 25 (us 411) over Little Cahaba River?

It is owned by the State Highway Agency.