US Bridges

Natchez Trace Park over Threet Creek

Good

Lauderdale County, Alabama · 2.3 Miles North of Al Rou · Structure no. 5570494P0000000

Built
2009
16 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
98 ft
3 main spans
Daily traffic
990
2024 count
Owner
Federal
National Park Service

About this bridge

Natchez Trace Park over Threet Creek is a concrete continuous slab carrying Natchez Trace Park over Threet Creek in Lauderdale County, Alabama. It was built in 2009, so it is 16 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 990 vehicles a day, roughly 2% of them trucks, projected to reach 1,089 by 2044. The structure is 98 ft (29.8 m) long and 37 ft wide. If it were closed, the detour would be 70.8 mi (114 km).

Location

Open in Google Maps
CarriesNatchez Trace Park
CrossesThreet Creek
Location2.3 Miles North of Al Rou
RouteFederal Lands Road 1
CountyLauderdale County
StateAlabama
Coordinates34.95472, -87.82194
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating55 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length98 ft (29.8 m)
Longest span40 ft (12.2 m)
Deck width37 ft (11.4 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic990 (2024)
Projected traffic1,089 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed70.8 mi (114 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$12,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Natchez Trace Park over Threet Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is Natchez Trace Park over Threet 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 March 2023.

How much traffic does Natchez Trace Park over Threet Creek carry?

About 990 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Natchez Trace Park over Threet Creek?

The structure is 98 ft (29.8 m) long with a longest span of 40 ft (12.2 m) and a deck 37 ft wide.

Who owns Natchez Trace Park over Threet Creek?

It is owned by the National Park Service.