US Bridges

Nfa A403 over Little South Mouse Creek

Fair

Bradley County, Tennessee · .04MI West of US11 · Structure no. 060A4030001

Built
1987
38 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete Continuous
Length
39 ft
3 main spans
Daily traffic
670
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A403 over Little South Mouse Creek is a concrete continuous culvert carrying Nfa A403 over Little South Mouse Creek in Bradley 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 6 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 670 vehicles a day, roughly 2% of them trucks, projected to reach 1,072 by 2041. The structure is 39 ft (11.9 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNfa A403
CrossesLittle South Mouse Creek
Location.04MI West of US11
RouteCounty Highway 403
CountyBradley County
StateTennessee
Coordinates35.25675, -84.79153
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic670 (2020)
Projected traffic1,072 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A403 over Little South Mouse Creek built?

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

What condition is Nfa A403 over Little South Mouse 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 September 2023.

How much traffic does Nfa A403 over Little South Mouse Creek carry?

About 670 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A403 over Little South Mouse Creek?

The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Nfa A403 over Little South Mouse Creek?

It is owned by the County Highway Agency.