US Bridges

Nfa 2161 (sa 5802) over Shellmound Rd. / I-24 EB

FairPosted for load

Marion County, Tennessee · 3.5 MI S of SR28 · Structure no. 58I00240039

Built
1965
60 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
139 ft
3 main spans
Daily traffic
1,716
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa 2161 (sa 5802) over Shellmound Rd. / I-24 EB is a concrete continuous tee beam carrying Nfa 2161 (sa 5802) over Shellmound Rd. / I-24 EB in Marion 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 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. Its operating status is: posted for load restriction.

It carries about 1,716 vehicles a day, roughly 3% of them trucks, projected to reach 2,467 by 2042. The structure is 139 ft (42.5 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 2161 (sa 5802)
CrossesShellmound Rd. / I-24 EB
Location3.5 MI S of SR28
RouteCounty Highway 2161
CountyMarion County
StateTennessee
Coordinates35.04068, -85.60353
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.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.8 US tons
Inventory rating21.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length139 ft (42.5 m)
Longest span60 ft (18.4 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,716 (2021)
Projected traffic2,467 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$229,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa 2161 (sa 5802) over Shellmound Rd. / I-24 EB built?

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

What condition is Nfa 2161 (sa 5802) over Shellmound Rd. / I-24 EB 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 July 2024.

How much traffic does Nfa 2161 (sa 5802) over Shellmound Rd. / I-24 EB carry?

About 1,716 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 2161 (sa 5802) over Shellmound Rd. / I-24 EB?

The structure is 139 ft (42.5 m) long with a longest span of 60 ft (18.4 m) and a deck 34 ft wide.

Who owns Nfa 2161 (sa 5802) over Shellmound Rd. / I-24 EB?

It is owned by the State Highway Agency.