US Bridges

FAU 6 over Little Bigby Creek

Fair

Maury County, Tennessee · .3 M S JCT SR99&SR6 · Structure no. 60SR0060019

Built
1925
100 years old, rebuilt 2003
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
99 ft
3 main spans
Daily traffic
20,827
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 6 over Little Bigby Creek is a prestressed concrete continuous box beam or girders - single or spread carrying FAU 6 over Little Bigby Creek in Maury County, Tennessee. It was built in 1925 and reconstructed in 2003, so it is 100 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 20,827 vehicles a day, roughly 1% of them trucks, projected to reach 30,000 by 2040. The structure is 99 ft (30.2 m) long and 38 ft wide. If it were closed, the detour would be 67.7 mi (109 km).

CarriesFAU 6
CrossesLittle Bigby Creek
Location.3 M S JCT SR99&SR6
RouteU.S. Route 43
Coordinates35.59929, -87.07407
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 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 rating59.5 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length99 ft (30.2 m)
Longest span33 ft (10.1 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,827 (2021)
Projected traffic30,000 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed67.7 mi (109 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$959,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 6 over Little Bigby Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 2003.

What condition is FAU 6 over Little 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 April 2024.

How much traffic does FAU 6 over Little Bigby Creek carry?

About 20,827 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is FAU 6 over Little Bigby Creek?

The structure is 99 ft (30.2 m) long with a longest span of 33 ft (10.1 m) and a deck 38 ft wide.

Who owns FAU 6 over Little Bigby Creek?

It is owned by the State Highway Agency.