US Bridges

Nfa A609 over South Indian Creek

Good

Unicoi County, Tennessee · E Off SR81 N of SR352 JCT · Structure no. 860A6090001

Built
1998
27 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
64 ft
4 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A609 over South Indian Creek is a concrete continuous culvert carrying Nfa A609 over South Indian Creek in Unicoi County, Tennessee. It was built in 1998, so it is 27 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20 vehicles a day, roughly 1% of them trucks, projected to reach 32 by 2040. The structure is 64 ft (19.5 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNfa A609
CrossesSouth Indian Creek
LocationE Off SR81 N of SR352 JCT
RouteCounty Highway 609
Coordinates36.04528, -82.54242
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span15 ft (4.6 m)
Deck width27 ft (8.3 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic32 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 A609 over South Indian Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Nfa A609 over South Indian Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does Nfa A609 over South Indian Creek carry?

About 20 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa A609 over South Indian Creek?

The structure is 64 ft (19.5 m) long with a longest span of 15 ft (4.6 m) and a deck 27 ft wide.

Who owns Nfa A609 over South Indian Creek?

It is owned by the County Highway Agency.