US Bridges

Nfa A510 over Leatherwood Creek

Fair

Lincoln County, Tennessee · 2 M S Mcburg. · Structure no. 520A5100001

Built
1940
85 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
100
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A510 over Leatherwood Creek is a steel stringer/multi-beam or girder carrying Nfa A510 over Leatherwood Creek in Lincoln County, Tennessee. It was built in 1940, so it is 85 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 6 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 100 vehicles a day, roughly 2% of them trucks, projected to reach 160 by 2039. The structure is 24 ft (7.3 m) long and 19 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A510
CrossesLeatherwood Creek
Location2 M S Mcburg.
RouteCounty Highway 510
CountyLincoln County
StateTennessee
Coordinates35.15112, -86.81118
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.
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating43.7 US tons
Inventory rating29.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span21 ft (6.4 m)
Deck width19 ft (5.7 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic160 by 2039
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 A510 over Leatherwood Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Nfa A510 over Leatherwood 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 July 2023.

How much traffic does Nfa A510 over Leatherwood Creek carry?

About 100 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A510 over Leatherwood Creek?

The structure is 24 ft (7.3 m) long with a longest span of 21 ft (6.4 m) and a deck 19 ft wide.

Who owns Nfa A510 over Leatherwood Creek?

It is owned by the County Highway Agency.