US Bridges

CO 10 over Threet Creek

Fair

Lauderdale County, Alabama · 2.4 MI W Int SR 157 · Structure no. 001916

Built
1939
86 years old
Condition
Fair
inspected February 2025
Type
Tee Beam
Concrete
Length
23 ft
1 main span
Daily traffic
160
1989 count
Owner
County
County Highway Agency

About this bridge

CO 10 over Threet Creek is a concrete tee beam carrying CO 10 over Threet Creek in Lauderdale County, Alabama. It was built in 1939, so it is 86 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 160 vehicles a day, roughly 10% of them trucks, projected to reach 320 by 2029. The structure is 23 ft (7 m) long and 21 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCO 10
CrossesThreet Creek
Location2.4 MI W Int SR 157
RouteCounty Highway 10
StateAlabama
Coordinates34.99137, -87.85483
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionFebruary 2025
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating26.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width21 ft (6.4 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (1989)
Projected traffic320 by 2029
Trucks10%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$212,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO 10 over Threet Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is CO 10 over Threet 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 CO 10 over Threet Creek carry?

About 160 vehicles per day (1989 count), of which roughly 10% are trucks.

How long is CO 10 over Threet Creek?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 21 ft wide.

Who owns CO 10 over Threet Creek?

It is owned by the County Highway Agency.