US Bridges

Al - 3 North over Cahaba Valley Creek

Fair

Shelby County, Alabama · .1 Mi. So. Al 119 · Structure no. 002092

Built
1924
101 years old, rebuilt 1940
Condition
Fair
inspected February 2025
Type
Tee Beam
Concrete
Length
127 ft
3 main spans
Daily traffic
15,675
2025 count
Owner
State
State Highway Agency

About this bridge

Al - 3 North over Cahaba Valley Creek is a concrete tee beam carrying Al - 3 North over Cahaba Valley Creek in Shelby County, Alabama. It was built in 1924 and reconstructed in 1940, so it is 101 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 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 15,675 vehicles a day, roughly 5% of them trucks, projected to reach 20,135 by 2045. The structure is 127 ft (38.7 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAl - 3 North
CrossesCahaba Valley Creek
Location.1 Mi. So. Al 119
RouteU.S. Route 31
StateAlabama
Coordinates33.32974, -86.79242
Functional classUrban Other Principal 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating40.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length127 ft (38.7 m)
Longest span42 ft (12.8 m)
Deck width40 ft (12.3 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,675 (2025)
Projected traffic20,135 by 2045
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.5 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Al - 3 North over Cahaba Valley Creek built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1940.

What condition is Al - 3 North over Cahaba Valley Creek 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 February 2025.

How much traffic does Al - 3 North over Cahaba Valley Creek carry?

About 15,675 vehicles per day (2025 count), of which roughly 5% are trucks.

How long is Al - 3 North over Cahaba Valley Creek?

The structure is 127 ft (38.7 m) long with a longest span of 42 ft (12.8 m) and a deck 40 ft wide.

Who owns Al - 3 North over Cahaba Valley Creek?

It is owned by the State Highway Agency.