US Bridges

Nfa A380 over Terrapin Run Branch

Fair

Stewart County, Tennessee · 4MI.S-W of Dover · Structure no. 810A3130003

Built
1978
47 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
90
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A380 over Terrapin Run Branch is a concrete continuous culvert carrying Nfa A380 over Terrapin Run Branch in Stewart County, Tennessee. It was built in 1978, so it is 47 years old, younger 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 90 vehicles a day, roughly 2% of them trucks, projected to reach 144 by 2042. The structure is 32 ft (9.8 m) long and 30 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesNfa A380
CrossesTerrapin Run Branch
Location4MI.S-W of Dover
RouteCounty Highway 380
CountyStewart County
StateTennessee
Coordinates36.41173, -87.92786
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.3 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length32 ft (9.8 m)
Longest span15 ft (4.6 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2020)
Projected traffic144 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$16,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A380 over Terrapin Run Branch built?

It was built in 1978, making it 47 years old in 2025.

What condition is Nfa A380 over Terrapin Run Branch 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 A380 over Terrapin Run Branch carry?

About 90 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A380 over Terrapin Run Branch?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.6 m) and a deck 30 ft wide.

Who owns Nfa A380 over Terrapin Run Branch?

It is owned by the County Highway Agency.