US Bridges

Nfa A361 over Leath Creek

FairPosted for load

Hardin County, Tennessee · Hamburg RD North SR 57 · Structure no. 360A3610001

Built
1970
55 years old
Condition
Fair
inspected March 2024
Type
Channel Beam
Concrete
Length
29 ft
1 main span
Daily traffic
380
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A361 over Leath Creek is a concrete channel beam carrying Nfa A361 over Leath Creek in Hardin County, Tennessee. It was built in 1970, so it is 55 years old, older than the Tennessee average of 47.4 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. Its operating status is: posted for load restriction.

It carries about 380 vehicles a day, roughly 2% of them trucks, projected to reach 608 by 2042. The structure is 29 ft (8.8 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNfa A361
CrossesLeath Creek
LocationHamburg RD North SR 57
RouteCounty Highway 361
CountyHardin County
StateTennessee
Coordinates35.06, -88.3038
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length29 ft (8.8 m)
Longest span29 ft (8.8 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic380 (2020)
Projected traffic608 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$481,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A361 over Leath Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Nfa A361 over Leath 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 March 2024.

How much traffic does Nfa A361 over Leath Creek carry?

About 380 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A361 over Leath Creek?

The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.8 m) and a deck 25 ft wide.

Who owns Nfa A361 over Leath Creek?

It is owned by the County Highway Agency.