US Bridges

Nfa A721 over Big Caney Branch

Fair

Wilson County, Tennessee · 1.9 M SW JCT I40&SMITH Cl · Structure no. 950A7210001

Built
1950
75 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete Continuous
Length
52 ft
4 main spans
Daily traffic
60
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A721 over Big Caney Branch is a concrete continuous culvert carrying Nfa A721 over Big Caney Branch in Wilson County, Tennessee. It was built in 1950, so it is 75 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 60 vehicles a day, roughly 2% of them trucks, projected to reach 96 by 2040. The structure is 52 ft (15.8 m) long and 17 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A721
CrossesBig Caney Branch
Location1.9 M SW JCT I40&SMITH Cl
RouteCounty Highway 0A721
CountyWilson County
StateTennessee
Coordinates36.14982, -86.11692
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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 geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than 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 spans4
Design loadH 20
Structure length52 ft (15.8 m)
Longest span10 ft (3 m)
Deck width17 ft (5.2 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2020)
Projected traffic96 by 2040
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$313,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A721 over Big Caney Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Nfa A721 over Big Caney Branch 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 A721 over Big Caney Branch carry?

About 60 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A721 over Big Caney Branch?

The structure is 52 ft (15.8 m) long with a longest span of 10 ft (3 m) and a deck 17 ft wide.

Who owns Nfa A721 over Big Caney Branch?

It is owned by the County Highway Agency.