US Bridges

FAS 145 over Mingle Branch

Good

Cannon County, Tennessee · 2.5 Mi.S.Of Auburntown · Structure no. 08SR1450007

Built
1951
74 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete
Length
34 ft
3 main spans
Daily traffic
945
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 145 over Mingle Branch is a concrete slab carrying FAS 145 over Mingle Branch in Cannon County, Tennessee. It was built in 1951, so it is 74 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 945 vehicles a day, roughly 5% of them trucks, projected to reach 1,408 by 2041. The structure is 34 ft (10.4 m) long and 26 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

CarriesFAS 145
CrossesMingle Branch
Location2.5 Mi.S.Of Auburntown
RouteState Highway 145
Coordinates35.90654, -86.10394
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width26 ft (8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic945 (2021)
Projected traffic1,408 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$97,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 145 over Mingle Branch built?

It was built in 1951, making it 74 years old in 2025.

What condition is FAS 145 over Mingle Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does FAS 145 over Mingle Branch carry?

About 945 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 145 over Mingle Branch?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns FAS 145 over Mingle Branch?

It is owned by the State Highway Agency.