US Bridges

FAS 21 over Davidson Creek

Fair

Obion County, Tennessee · 2.9 Miles East of Troy · Structure no. 66S80070005

Built
1987
38 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
133 ft
3 main spans
Daily traffic
406
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 21 over Davidson Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying FAS 21 over Davidson Creek in Obion County, Tennessee. It was built in 1987, so it is 38 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 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 406 vehicles a day, roughly 4% of them trucks, projected to reach 624 by 2041. The structure is 133 ft (40.5 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 21
CrossesDavidson Creek
Location2.9 Miles East of Troy
RouteState Highway 21
CountyObion County
StateTennessee
Coordinates36.34411, -89.10414
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span45 ft (13.7 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic406 (2021)
Projected traffic624 by 2041
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$883,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 21 over Davidson Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is FAS 21 over Davidson 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 March 2023.

How much traffic does FAS 21 over Davidson Creek carry?

About 406 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is FAS 21 over Davidson Creek?

The structure is 133 ft (40.5 m) long with a longest span of 45 ft (13.7 m) and a deck 26 ft wide.

Who owns FAS 21 over Davidson Creek?

It is owned by the State Highway Agency.