US Bridges

FAS 166 over Big Bigby Creek

Fair

Maury County, Tennessee · .5 M W JCT SR6&SR166 · Structure no. 60S61990005

Built
1953
72 years old
Condition
Fair
inspected March 2024
Type
Tee Beam
Concrete
Length
143 ft
4 main spans
Daily traffic
1,722
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 166 over Big Bigby Creek is a concrete tee beam carrying FAS 166 over Big Bigby Creek in Maury County, Tennessee. It was built in 1953, so it is 72 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 1,722 vehicles a day, roughly 3% of them trucks, projected to reach 2,272 by 2040. The structure is 143 ft (43.6 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAS 166
CrossesBig Bigby Creek
Location.5 M W JCT SR6&SR166
RouteState Highway 166
CountyMaury County
StateTennessee
Coordinates35.54553, -87.23438
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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 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 rating45.6 US tons
Inventory rating27.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span43 ft (13.1 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,722 (2021)
Projected traffic2,272 by 2040
Trucks3%
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$410,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 166 over Big Bigby Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is FAS 166 over Big Bigby 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 2024.

How much traffic does FAS 166 over Big Bigby Creek carry?

About 1,722 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is FAS 166 over Big Bigby Creek?

The structure is 143 ft (43.6 m) long with a longest span of 43 ft (13.1 m) and a deck 29 ft wide.

Who owns FAS 166 over Big Bigby Creek?

It is owned by the State Highway Agency.