US Bridges

AL-13 over Flat Creek

Good

Marion County, Alabama · 1.5 Miles S JCT AL-172 · Structure no. 017331

Built
1998
27 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
164 ft
4 main spans
Daily traffic
5,675
2020 count
Owner
State
State Highway Agency

About this bridge

AL-13 over Flat Creek is a prestressed concrete stringer/multi-beam or girder carrying AL-13 over Flat Creek in Marion County, Alabama. It was built in 1998, so it is 27 years old, younger than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,675 vehicles a day, roughly 7% of them trucks, projected to reach 7,152 by 2040. The structure is 164 ft (49.9 m) long and 42 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesAL-13
CrossesFlat Creek
Location1.5 Miles S JCT AL-172
RouteState Highway 13
StateAlabama
Coordinates34.25553, -87.69022
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.6 US tons
Inventory rating41.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length164 ft (49.9 m)
Longest span42 ft (12.9 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,675 (2020)
Projected traffic7,152 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedNone recorded
Estimated improvement cost$1.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was AL-13 over Flat Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is AL-13 over Flat Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does AL-13 over Flat Creek carry?

About 5,675 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is AL-13 over Flat Creek?

The structure is 164 ft (49.9 m) long with a longest span of 42 ft (12.9 m) and a deck 42 ft wide.

Who owns AL-13 over Flat Creek?

It is owned by the State Highway Agency.