US Bridges

Nfa 1775 (sa 6801) over Furnace Branch

Fair

Perry County, Tennessee · 16.3 M. Nw. Flatwoods. · Structure no. 68017750003

Built
1960
65 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
291
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1775 (sa 6801) over Furnace Branch is a concrete continuous culvert carrying Nfa 1775 (sa 6801) over Furnace Branch in Perry County, Tennessee. It was built in 1960, so it is 65 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 291 vehicles a day, roughly 3% of them trucks, projected to reach 352 by 2041. The structure is 23 ft (7 m) long. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesNfa 1775 (sa 6801)
CrossesFurnace Branch
Location16.3 M. Nw. Flatwoods.
RouteCounty Highway 1775
CountyPerry County
StateTennessee
Coordinates35.5593, -87.96412
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 inspectionApril 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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic291 (2021)
Projected traffic352 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 1775 (sa 6801) over Furnace Branch built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nfa 1775 (sa 6801) over Furnace 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 April 2023.

How much traffic does Nfa 1775 (sa 6801) over Furnace Branch carry?

About 291 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1775 (sa 6801) over Furnace Branch?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns Nfa 1775 (sa 6801) over Furnace Branch?

It is owned by the County Highway Agency.