US Bridges

Nfa A006 over Crane Branch

PoorPosted for load

Cannon County, Tennessee · 1.2 Mi.W.Of Warren Co.Li. · Structure no. 08SR0010015

Built
1924
101 years old, rebuilt 1962
Condition
Poor
inspected March 2023
Type
Tee Beam
Concrete
Length
45 ft
2 main spans
Daily traffic
409
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa A006 over Crane Branch is a concrete tee beam carrying Nfa A006 over Crane Branch in Cannon County, Tennessee. It was built in 1924 and reconstructed in 1962, so it is 101 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 409 vehicles a day, roughly 3% of them trucks, projected to reach 680 by 2041. The structure is 45 ft (13.7 m) long and 34 ft wide. If it were closed, the detour would be 75.2 mi (121 km).

CarriesNfa A006
CrossesCrane Branch
Location1.2 Mi.W.Of Warren Co.Li.
RouteCounty Highway 0A006
Coordinates35.76899, -85.97969
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.9 US tons
Inventory rating21.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length45 ft (13.7 m)
Longest span23 ft (6.9 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic409 (2021)
Projected traffic680 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed75.2 mi (121 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 A006 over Crane Branch built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1962.

What condition is Nfa A006 over Crane Branch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does Nfa A006 over Crane Branch carry?

About 409 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa A006 over Crane Branch?

The structure is 45 ft (13.7 m) long with a longest span of 23 ft (6.9 m) and a deck 34 ft wide.

Who owns Nfa A006 over Crane Branch?

It is owned by the County Highway Agency.