US Bridges

Nfa A393 over Clear Creek

Fair

Rhea County, Tennessee · 4MI East of SR 29 · Structure no. 720A3930001

Built
1977
48 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete Continuous
Length
53 ft
4 main spans
Daily traffic
230
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A393 over Clear Creek is a concrete continuous culvert carrying Nfa A393 over Clear Creek in Rhea County, Tennessee. It was built in 1977, so it is 48 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 230 vehicles a day, roughly 4% of them trucks, projected to reach 368 by 2040. The structure is 53 ft (16.2 m) long and 35 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNfa A393
CrossesClear Creek
Location4MI East of SR 29
RouteCounty Highway 393
CountyRhea County
StateTennessee
Coordinates35.58096, -84.89784
Functional classRural Local

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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.5 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length53 ft (16.2 m)
Longest span12 ft (3.7 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2020)
Projected traffic368 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 A393 over Clear Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Nfa A393 over Clear 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 October 2024.

How much traffic does Nfa A393 over Clear Creek carry?

About 230 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A393 over Clear Creek?

The structure is 53 ft (16.2 m) long with a longest span of 12 ft (3.7 m) and a deck 35 ft wide.

Who owns Nfa A393 over Clear Creek?

It is owned by the County Highway Agency.