US Bridges

F.A.S.15 over Little Cahaba River

Fair

Bibb County, Alabama · 3.9MI NW Al 25 on Bltn RD · Structure no. 007658

Built
1962
63 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
406 ft
3 main spans
Daily traffic
215
1996 count
Owner
County
County Highway Agency

About this bridge

F.A.S.15 over Little Cahaba River is a steel continuous stringer/multi-beam or girder carrying F.A.S.15 over Little Cahaba River in Bibb County, Alabama. It was built in 1962, so it is 63 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 215 vehicles a day, roughly 20% of them trucks, projected to reach 275 by 2030. The structure is 406 ft (123.7 m) long and 27 ft wide.

CarriesF.A.S.15
CrossesLittle Cahaba River
Location3.9MI NW Al 25 on Bltn RD
RouteCounty Highway 15
StateAlabama
Coordinates33.05752, -87.02379
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 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 alignment6: Equal to present minimum criteria
Operating rating43.5 US tons
Inventory rating26 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+6 approach)
Design loadH 15
Structure length406 ft (123.7 m)
Longest span80 ft (24.4 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic215 (1996)
Projected traffic275 by 2030
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$2.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was F.A.S.15 over Little Cahaba River built?

It was built in 1962, making it 63 years old in 2025.

What condition is F.A.S.15 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 F.A.S.15 over Little Cahaba River carry?

About 215 vehicles per day (1996 count), of which roughly 20% are trucks.

How long is F.A.S.15 over Little Cahaba River?

The structure is 406 ft (123.7 m) long with a longest span of 80 ft (24.4 m) and a deck 27 ft wide.

Who owns F.A.S.15 over Little Cahaba River?

It is owned by the County Highway Agency.