US Bridges

Nfa A400 over Calebs Creek

Fair

Robertson County, Tennessee · 3.2 MI NW JCT SR49&SR257 · Structure no. 740A4000001

Built
1960
65 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
150
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A400 over Calebs Creek is a concrete continuous culvert carrying Nfa A400 over Calebs Creek in Robertson County, Tennessee. It was built in 1960, so it is 65 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 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 150 vehicles a day, roughly 2% of them trucks, projected to reach 240 by 2040. The structure is 35 ft (10.7 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesNfa A400
CrossesCalebs Creek
Location3.2 MI NW JCT SR49&SR257
RouteCounty Highway 0A400
CountyRobertson County
StateTennessee
Coordinates36.47849, -87.00471
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.5 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length35 ft (10.7 m)
Longest span15 ft (4.6 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic240 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 A400 over Calebs Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nfa A400 over Calebs 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 May 2024.

How much traffic does Nfa A400 over Calebs Creek carry?

About 150 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A400 over Calebs Creek?

The structure is 35 ft (10.7 m) long with a longest span of 15 ft (4.6 m) and a deck 30 ft wide.

Who owns Nfa A400 over Calebs Creek?

It is owned by the County Highway Agency.