US Bridges

Natchez Trace Park over County Road

Good

Williamson County, Tennessee · 7.8 Miles to Tn Route 46 · Structure no. 5570436P0000000

Built
1989
36 years old
Condition
Good
inspected February 2025
Type
Slab
Concrete Continuous
Length
159 ft
3 main spans
Daily traffic
410
2024 count
Owner
Federal
National Park Service

About this bridge

Natchez Trace Park over County Road is a concrete continuous slab carrying Natchez Trace Park over County Road in Williamson County, Tennessee. It was built in 1989, so it is 36 years old, younger than the Tennessee average of 47.4 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 410 vehicles a day, roughly 2% of them trucks, projected to reach 451 by 2044. The structure is 159 ft (48.5 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNatchez Trace Park
CrossesCounty Road
Location7.8 Miles to Tn Route 46
RouteFederal Lands Road 1
CountyWilliamson County
StateTennessee
Coordinates35.82586, -87.12286
Functional classRural Minor 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.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31 US tons
Inventory rating18 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length159 ft (48.5 m)
Longest span53 ft (16.2 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2024)
Projected traffic451 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost$216,000 (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Natchez Trace Park over County Road built?

It was built in 1989, making it 36 years old in 2025.

What condition is Natchez Trace Park over County Road 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 February 2025.

How much traffic does Natchez Trace Park over County Road carry?

About 410 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Natchez Trace Park over County Road?

The structure is 159 ft (48.5 m) long with a longest span of 53 ft (16.2 m) and a deck 37 ft wide.

Who owns Natchez Trace Park over County Road?

It is owned by the National Park Service.