US Bridges

Nfa 1153 (sa 7708) over Sequatchie River

Fair

Sequatchie County, Tennessee · .5 MI East of US 127 · Structure no. 77011530007

Built
1970
55 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
238 ft
3 main spans
Daily traffic
472
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1153 (sa 7708) over Sequatchie River is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa 1153 (sa 7708) over Sequatchie River in Sequatchie County, Tennessee. It was built in 1970, so it is 55 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 6 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 472 vehicles a day, roughly 3% of them trucks, projected to reach 707 by 2042. The structure is 238 ft (72.5 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNfa 1153 (sa 7708)
CrossesSequatchie River
Location.5 MI East of US 127
RouteCounty Highway 1153
CountySequatchie County
StateTennessee
Coordinates35.41148, -85.34639
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length238 ft (72.5 m)
Longest span79 ft (24.1 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic472 (2021)
Projected traffic707 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Nfa 1153 (sa 7708) over Sequatchie River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Nfa 1153 (sa 7708) over Sequatchie River 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 December 2024.

How much traffic does Nfa 1153 (sa 7708) over Sequatchie River carry?

About 472 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1153 (sa 7708) over Sequatchie River?

The structure is 238 ft (72.5 m) long with a longest span of 79 ft (24.1 m) and a deck 32 ft wide.

Who owns Nfa 1153 (sa 7708) over Sequatchie River?

It is owned by the County Highway Agency.