US Bridges

FAU 3448 over Big Rock Creek

FairPosted for load

Marshall County, Tennessee · In Lewisburg City Limits · Structure no. 59M34480001

Built
1955
70 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete
Length
75 ft
3 main spans
Daily traffic
728
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAU 3448 over Big Rock Creek is a concrete tee beam carrying FAU 3448 over Big Rock Creek in Marshall County, Tennessee. It was built in 1955, so it is 70 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 728 vehicles a day, roughly 3% of them trucks, projected to reach 1,440 by 2041. The structure is 75 ft (22.9 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFAU 3448
CrossesBig Rock Creek
LocationIn Lewisburg City Limits
RouteCity Street 3448
CountyMarshall County
StateTennessee
Coordinates35.43837, -86.7941
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length75 ft (22.9 m)
Longest span25 ft (7.7 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic728 (2021)
Projected traffic1,440 by 2041
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$188,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 3448 over Big Rock Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is FAU 3448 over Big Rock 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 August 2024.

How much traffic does FAU 3448 over Big Rock Creek carry?

About 728 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is FAU 3448 over Big Rock Creek?

The structure is 75 ft (22.9 m) long with a longest span of 25 ft (7.7 m) and a deck 26 ft wide.

Who owns FAU 3448 over Big Rock Creek?

It is owned by the City or Municipal Highway Agency.