US Bridges

Nfa 1797 (sa 8112) over Blue Creek

Fair

Stewart County, Tennessee · 3 MI NW of SR 76 · Structure no. 81017970001

Built
1966
59 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
68
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1797 (sa 8112) over Blue Creek is a concrete continuous culvert carrying Nfa 1797 (sa 8112) over Blue Creek in Stewart County, Tennessee. It was built in 1966, so it is 59 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 68 vehicles a day, roughly 3% of them trucks, projected to reach 109 by 2042. The structure is 25 ft (7.6 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1797 (sa 8112)
CrossesBlue Creek
Location3 MI NW of SR 76
RouteCounty Highway 1797
CountyStewart County
StateTennessee
Coordinates36.53095, -87.85947
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating32.2 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width25 ft (7.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68 (2021)
Projected traffic109 by 2042
Trucks3%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$169,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1797 (sa 8112) over Blue Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Nfa 1797 (sa 8112) over Blue 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 1797 (sa 8112) over Blue Creek carry?

About 68 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1797 (sa 8112) over Blue Creek?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m) and a deck 25 ft wide.

Who owns Nfa 1797 (sa 8112) over Blue Creek?

It is owned by the County Highway Agency.