US Bridges

Nfa 2175 (sa 8919) over Powder Mill Branch

Fair

Warren County, Tennessee · 4 MI North of SR 8 · Structure no. 89021750001

Built
1986
39 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
37 ft
2 main spans
Daily traffic
233
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2175 (sa 8919) over Powder Mill Branch is a concrete continuous culvert carrying Nfa 2175 (sa 8919) over Powder Mill Branch in Warren County, Tennessee. It was built in 1986, so it is 39 years old, younger 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 233 vehicles a day, roughly 3% of them trucks, projected to reach 373 by 2042. The structure is 37 ft (11.3 m) long and 28 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

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CarriesNfa 2175 (sa 8919)
CrossesPowder Mill Branch
Location4 MI North of SR 8
RouteCounty Highway 2175
CountyWarren County
StateTennessee
Coordinates35.67047, -85.66061
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.4 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 closed14.3 mi (23 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 Powder Mill Branch built?

It was built in 1986, making it 39 years old in 2025.

What condition is Nfa 2175 (sa 8919) over Powder Mill 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 Powder Mill Branch carry?

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

How long is Nfa 2175 (sa 8919) over Powder Mill Branch?

The structure is 37 ft (11.3 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Nfa 2175 (sa 8919) over Powder Mill Branch?

It is owned by the County Highway Agency.