US Bridges

Nfa A403 over Robinson Creek

Fair

Hardin County, Tennessee · Mary Hall RD South SR 57 · Structure no. 360A4030001

Built
1986
39 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
40 ft
3 main spans
Daily traffic
330
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A403 over Robinson Creek is a concrete continuous culvert carrying Nfa A403 over Robinson Creek in Hardin County, Tennessee. It was built in 1986, so it is 39 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 330 vehicles a day, roughly 2% of them trucks, projected to reach 528 by 2042. The structure is 40 ft (12.2 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNfa A403
CrossesRobinson Creek
LocationMary Hall RD South SR 57
RouteCounty Highway 403
CountyHardin County
StateTennessee
Coordinates35.04081, -88.25933
Functional classRural 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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span12 ft (3.8 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic330 (2020)
Projected traffic528 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A403 over Robinson Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Nfa A403 over Robinson 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 Nfa A403 over Robinson Creek carry?

About 330 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A403 over Robinson Creek?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.8 m) and a deck 28 ft wide.

Who owns Nfa A403 over Robinson Creek?

It is owned by the County Highway Agency.