US Bridges

FAS 108 over Branch

Good

Grundy County, Tennessee · .1 MI from Gross Rd. · Structure no. 31SR1080017

Built
1940
85 years old, rebuilt 1967
Condition
Good
inspected May 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
2,280
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 108 over Branch is a concrete continuous culvert carrying FAS 108 over Branch in Grundy County, Tennessee. It was built in 1940 and reconstructed in 1967, so it is 85 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 2,280 vehicles a day, roughly 6% of them trucks, projected to reach 3,264 by 2040. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 62.8 mi (101 km).

CarriesFAS 108
CrossesBranch
Location.1 MI from Gross Rd.
RouteState Highway 108
Coordinates35.46057, -85.84133
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.6 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,280 (2021)
Projected traffic3,264 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.8 mi (101 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 108 over Branch built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1967.

What condition is FAS 108 over 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 May 2024.

How much traffic does FAS 108 over Branch carry?

About 2,280 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is FAS 108 over Branch?

The structure is 22 ft (6.6 m) long with a longest span of 10 ft (3 m).

Who owns FAS 108 over Branch?

It is owned by the State Highway Agency.