US Bridges

FAU 359 over Powder Branch

Good

Carter County, Tennessee · In Johnson City · Structure no. 10SR0670005

Built
1997
28 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete Continuous
Length
46 ft
2 main spans
Daily traffic
7,010
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 359 over Powder Branch is a concrete continuous culvert carrying FAU 359 over Powder Branch in Carter County, Tennessee. It was built in 1997, so it is 28 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 7,010 vehicles a day, roughly 4% of them trucks, projected to reach 10,826 by 2041. The structure is 46 ft (13.9 m) long and 58 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesFAU 359
CrossesPowder Branch
LocationIn Johnson City
RouteState Highway 359
CountyCarter County
StateTennessee
Coordinates36.31923, -82.2782
Functional classUrban Minor Arterial

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 inspectionJune 2023
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 rating99.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length46 ft (13.9 m)
Longest span21 ft (6.3 m)
Deck width58 ft (17.7 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,010 (2021)
Projected traffic10,826 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 FAU 359 over Powder Branch built?

It was built in 1997, making it 28 years old in 2025.

What condition is FAU 359 over Powder Branch 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 June 2023.

How much traffic does FAU 359 over Powder Branch carry?

About 7,010 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is FAU 359 over Powder Branch?

The structure is 46 ft (13.9 m) long with a longest span of 21 ft (6.3 m) and a deck 58 ft wide.

Who owns FAU 359 over Powder Branch?

It is owned by the State Highway Agency.