US Bridges

FAS 306 over Riggins Branch

Good

Bradley County, Tennessee · 2.6 Mi.N.Of Cleveland · Structure no. 06011870011

Built
1965
60 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
3,468
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 306 over Riggins Branch is a concrete continuous culvert carrying FAS 306 over Riggins Branch in Bradley County, Tennessee. It was built in 1965, so it is 60 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 3,468 vehicles a day, roughly 4% of them trucks, projected to reach 5,997 by 2041. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesFAS 306
CrossesRiggins Branch
Location2.6 Mi.N.Of Cleveland
RouteState Highway 306
Coordinates35.24574, -84.8822
Functional classUrban Collector

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 inspectionJuly 2023
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 length21 ft (6.4 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,468 (2021)
Projected traffic5,997 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 306 over Riggins Branch built?

It was built in 1965, making it 60 years old in 2025.

What condition is FAS 306 over Riggins 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 July 2023.

How much traffic does FAS 306 over Riggins Branch carry?

About 3,468 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is FAS 306 over Riggins Branch?

The structure is 21 ft (6.4 m) long with a longest span of 8 ft (2.4 m).

Who owns FAS 306 over Riggins Branch?

It is owned by the State Highway Agency.