US Bridges

Nfa 2175 (sa 8919) over Dark Hollow Branch

FairPosted for load

Warren County, Tennessee · 2 MI North of SR 8 · Structure no. 89021750003

Built
1965
60 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
233
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2175 (sa 8919) over Dark Hollow Branch is a concrete slab carrying Nfa 2175 (sa 8919) over Dark Hollow Branch in Warren 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 233 vehicles a day, roughly 3% of them trucks, projected to reach 373 by 2042. The structure is 27 ft (8.2 m) long and 27 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesNfa 2175 (sa 8919)
CrossesDark Hollow Branch
Location2 MI North of SR 8
RouteCounty Highway 2175
Coordinates35.65395, -85.66555
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length27 ft (8.2 m)
Longest span27 ft (8.2 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic233 (2021)
Projected traffic373 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 2175 (sa 8919) over Dark Hollow Branch built?

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

What condition is Nfa 2175 (sa 8919) over Dark Hollow 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 May 2023.

How much traffic does Nfa 2175 (sa 8919) over Dark Hollow Branch carry?

About 233 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 2175 (sa 8919) over Dark Hollow Branch?

The structure is 27 ft (8.2 m) long with a longest span of 27 ft (8.2 m) and a deck 27 ft wide.

Who owns Nfa 2175 (sa 8919) over Dark Hollow Branch?

It is owned by the County Highway Agency.