US Bridges

Nfa A659 over Heaton Creek

Good

Carter County, Tennessee · E of SR143-S of Roan Mtn. · Structure no. 100A6590001

Built
1983
42 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
200
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A659 over Heaton Creek is a concrete slab carrying Nfa A659 over Heaton Creek in Carter County, Tennessee. It was built in 1983, so it is 42 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 200 vehicles a day, roughly 2% of them trucks, projected to reach 320 by 2042. The structure is 32 ft (9.9 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesNfa A659
CrossesHeaton Creek
LocationE of SR143-S of Roan Mtn.
RouteCounty Highway 659
Coordinates36.14953, -82.08258
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length32 ft (9.9 m)
Longest span30 ft (9.1 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2020)
Projected traffic320 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A659 over Heaton Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Nfa A659 over Heaton 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 July 2023.

How much traffic does Nfa A659 over Heaton Creek carry?

About 200 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A659 over Heaton Creek?

The structure is 32 ft (9.9 m) long with a longest span of 30 ft (9.1 m) and a deck 25 ft wide.

Who owns Nfa A659 over Heaton Creek?

It is owned by the County Highway Agency.