US Bridges

FAS 378 over Richland Creek

Fair

Rhea County, Tennessee · In Dayton City Limits · Structure no. 72SR0292005

Built
1974
51 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
135 ft
2 main spans
Daily traffic
5,170
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 378 over Richland Creek is a prestressed concrete continuous box beam or girders - single or spread carrying FAS 378 over Richland Creek in Rhea County, Tennessee. It was built in 1974, so it is 51 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 5,170 vehicles a day, roughly 4% of them trucks, projected to reach 11,248 by 2040. The structure is 135 ft (41.1 m) long and 60 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 378
CrossesRichland Creek
LocationIn Dayton City Limits
RouteState Highway 378
CountyRhea County
StateTennessee
Coordinates35.4905, -85.01613
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating29.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length135 ft (41.1 m)
Longest span67 ft (20.3 m)
Deck width60 ft (18.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,170 (2021)
Projected traffic11,248 by 2040
Trucks4%
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 378 over Richland Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is FAS 378 over Richland 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 September 2024.

How much traffic does FAS 378 over Richland Creek carry?

About 5,170 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is FAS 378 over Richland Creek?

The structure is 135 ft (41.1 m) long with a longest span of 67 ft (20.3 m) and a deck 60 ft wide.

Who owns FAS 378 over Richland Creek?

It is owned by the State Highway Agency.