US Bridges

FAS 91 over Elliot Branch

Fair

Johnson County, Tennessee · .3 M N Dallanville · Structure no. 46SR0910011

Built
1916
109 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
3,131
2021 count
Owner
State
State Highway Agency

About this bridge

FAS 91 over Elliot Branch is a concrete continuous culvert carrying FAS 91 over Elliot Branch in Johnson County, Tennessee. It was built in 1916, so it is 109 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,131 vehicles a day, roughly 5% of them trucks, projected to reach 5,010 by 2042. The structure is 21 ft (6.4 m) long and 28 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

CarriesFAS 91
CrossesElliot Branch
Location.3 M N Dallanville
RouteState Highway 91
Coordinates36.60297, -81.75101
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,131 (2021)
Projected traffic5,010 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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$130,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 91 over Elliot Branch built?

It was built in 1916, making it 109 years old in 2025.

What condition is FAS 91 over Elliot Branch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does FAS 91 over Elliot Branch carry?

About 3,131 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAS 91 over Elliot Branch?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 28 ft wide.

Who owns FAS 91 over Elliot Branch?

It is owned by the State Highway Agency.