US Bridges

FAS 39 over Prospect Branch

Fair

McMinn County, Tennessee · 2MI.SE of Liberty Hill · Structure no. 54S43710003

Built
1992
33 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
36 ft
2 main spans
Daily traffic
288
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 39 over Prospect Branch is a concrete continuous culvert carrying FAS 39 over Prospect Branch in McMinn County, Tennessee. It was built in 1992, so it is 33 years old, younger 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 288 vehicles a day, roughly 5% of them trucks, projected to reach 517 by 2041. The structure is 36 ft (11 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 39
CrossesProspect Branch
Location2MI.SE of Liberty Hill
RouteState Highway 39
CountyMcMinn County
StateTennessee
Coordinates35.36436, -84.43325
Functional classRural Major 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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
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 alignment6: Equal to present minimum criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length36 ft (11 m)
Longest span12 ft (3.7 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic288 (2021)
Projected traffic517 by 2041
Trucks5%
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

OwnerState Highway Agency
Maintained byState 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 FAS 39 over Prospect Branch built?

It was built in 1992, making it 33 years old in 2025.

What condition is FAS 39 over Prospect 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 FAS 39 over Prospect Branch carry?

About 288 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 39 over Prospect Branch?

The structure is 36 ft (11 m) long with a longest span of 12 ft (3.7 m) and a deck 29 ft wide.

Who owns FAS 39 over Prospect Branch?

It is owned by the State Highway Agency.