US Bridges

FAS 138 over Overflow

FairPosted for load

Madison County, Tennessee · In Mercer · Structure no. 57SR1380007

Built
1949
76 years old, rebuilt 1990
Condition
Fair
inspected May 2023
Type
Channel Beam
Concrete
Length
51 ft
3 main spans
Daily traffic
866
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 138 over Overflow is a concrete channel beam carrying FAS 138 over Overflow in Madison County, Tennessee. It was built in 1949 and reconstructed in 1990, so it is 76 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. Its operating status is: posted for load restriction.

It carries about 866 vehicles a day, roughly 5% of them trucks, projected to reach 1,278 by 2041. The structure is 51 ft (15.5 m) long and 29 ft wide. If it were closed, the detour would be 64 mi (103 km).

Location

Open in Google Maps
CarriesFAS 138
CrossesOverflow
LocationIn Mercer
RouteState Highway 138
CountyMadison County
StateTennessee
Coordinates35.48103, -89.04344
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length51 ft (15.5 m)
Longest span17 ft (5.2 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic866 (2021)
Projected traffic1,278 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed64 mi (103 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$370,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 138 over Overflow built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1990.

What condition is FAS 138 over Overflow 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 May 2023.

How much traffic does FAS 138 over Overflow carry?

About 866 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 138 over Overflow?

The structure is 51 ft (15.5 m) long with a longest span of 17 ft (5.2 m) and a deck 29 ft wide.

Who owns FAS 138 over Overflow?

It is owned by the State Highway Agency.