US Bridges

Nfa 1415 (sa 8605) over Scioto Creek

Fair

Unicoi County, Tennessee · In Unicoi Just N of SR107 · Structure no. 86025590001

Built
1965
60 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
1,347
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1415 (sa 8605) over Scioto Creek is a concrete continuous culvert carrying Nfa 1415 (sa 8605) over Scioto Creek in Unicoi County, Tennessee. It was built in 1965, so it is 60 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 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 1,347 vehicles a day, roughly 3% of them trucks, projected to reach 2,155 by 2042. The structure is 25 ft (7.6 m) long and 34 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesNfa 1415 (sa 8605)
CrossesScioto Creek
LocationIn Unicoi Just N of SR107
RouteCounty Highway 1415
CountyUnicoi County
StateTennessee
Coordinates36.19247, -82.33779
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to 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 length25 ft (7.6 m)
Longest span11 ft (3.4 m)
Deck width34 ft (10.3 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,347 (2021)
Projected traffic2,155 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 1415 (sa 8605) over Scioto Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Nfa 1415 (sa 8605) over Scioto 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 July 2024.

How much traffic does Nfa 1415 (sa 8605) over Scioto Creek carry?

About 1,347 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1415 (sa 8605) over Scioto Creek?

The structure is 25 ft (7.6 m) long with a longest span of 11 ft (3.4 m) and a deck 34 ft wide.

Who owns Nfa 1415 (sa 8605) over Scioto Creek?

It is owned by the County Highway Agency.