US Bridges

Nfa 2312 (sa 2502) over Slate Creek

Fair

Fentress County, Tennessee · 1MI West of US 127 · Structure no. 25023120001

Built
1970
55 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
963
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2312 (sa 2502) over Slate Creek is a concrete continuous culvert carrying Nfa 2312 (sa 2502) over Slate Creek in Fentress 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.

It carries about 963 vehicles a day, roughly 3% of them trucks, projected to reach 1,541 by 2042. The structure is 22 ft (6.7 m) long and 83 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesNfa 2312 (sa 2502)
CrossesSlate Creek
Location1MI West of US 127
RouteCounty Highway 2312
CountyFentress County
StateTennessee
Coordinates36.20963, -85.03146
Functional classRural Minor Collector

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 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width83 ft (25.3 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic963 (2021)
Projected traffic1,541 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 2312 (sa 2502) over Slate Creek built?

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

What condition is Nfa 2312 (sa 2502) over Slate 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 August 2024.

How much traffic does Nfa 2312 (sa 2502) over Slate Creek carry?

About 963 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 2312 (sa 2502) over Slate Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 83 ft wide.

Who owns Nfa 2312 (sa 2502) over Slate Creek?

It is owned by the County Highway Agency.