US Bridges

Nfa A062 over Slagle Branch

Fair

Carter County, Tennessee · NW of Elizabethton · Structure no. 100A0620001

Built
1950
75 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
400
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A062 over Slagle Branch is a concrete continuous culvert carrying Nfa A062 over Slagle Branch in Carter County, Tennessee. It was built in 1950, so it is 75 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.

It carries about 400 vehicles a day, roughly 2% of them trucks, projected to reach 640 by 2041. The structure is 24 ft (7.3 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNfa A062
CrossesSlagle Branch
LocationNW of Elizabethton
RouteCounty Highway 62
CountyCarter County
StateTennessee
Coordinates36.36007, -82.23928
Functional classUrban 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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span11 ft (3.4 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2020)
Projected traffic640 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 of existing bridge without deck rehabilitation
Estimated improvement cost$82,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A062 over Slagle Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Nfa A062 over Slagle 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 August 2023.

How much traffic does Nfa A062 over Slagle Branch carry?

About 400 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A062 over Slagle Branch?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m) and a deck 24 ft wide.

Who owns Nfa A062 over Slagle Branch?

It is owned by the County Highway Agency.