US Bridges

FAU 317 over Friar Branch

Good

Hamilton County, Tennessee · 0.32 Mi. W of I-75 Jct. · Structure no. 33SR0022007

Built
1940
85 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
17,997
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 317 over Friar Branch is a concrete continuous culvert carrying FAU 317 over Friar Branch in Hamilton County, Tennessee. It was built in 1940, 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 17,997 vehicles a day, roughly 9% of them trucks, projected to reach 28,096 by 2041. The structure is 23 ft (7 m) long. If it were closed, the detour would be 14.9 mi (24 km).

CarriesFAU 317
CrossesFriar Branch
Location0.32 Mi. W of I-75 Jct.
RouteState Highway 317
Coordinates35.0627, -85.13907
Functional classUrban Other Principal 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 inspectionOctober 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 alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 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 traffic17,997 (2021)
Projected traffic28,096 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemYes

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 FAU 317 over Friar Branch built?

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

What condition is FAU 317 over Friar 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 October 2024.

How much traffic does FAU 317 over Friar Branch carry?

About 17,997 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAU 317 over Friar Branch?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns FAU 317 over Friar Branch?

It is owned by the State Highway Agency.