US Bridges

Nfa A175 over S. Fk. Harmon Creek

Good

Benton County, Tennessee · Campground Rd. · Structure no. 030A1750001

Built
2012
13 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete Continuous
Length
51 ft
3 main spans
Daily traffic
30
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A175 over S. Fk. Harmon Creek is a concrete continuous culvert carrying Nfa A175 over S. Fk. Harmon Creek in Benton County, Tennessee. It was built in 2012, so it is 13 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 30 vehicles a day, roughly 1% of them trucks, projected to reach 48 by 2042. The structure is 51 ft (15.5 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNfa A175
CrossesS. Fk. Harmon Creek
LocationCampground Rd.
RouteCounty Highway 175
Coordinates36.11478, -87.98689
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length51 ft (15.5 m)
Longest span16 ft (4.9 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2020)
Projected traffic48 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 A175 over S. Fk. Harmon Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is Nfa A175 over S. Fk. Harmon Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does Nfa A175 over S. Fk. Harmon Creek carry?

About 30 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa A175 over S. Fk. Harmon Creek?

The structure is 51 ft (15.5 m) long with a longest span of 16 ft (4.9 m) and a deck 30 ft wide.

Who owns Nfa A175 over S. Fk. Harmon Creek?

It is owned by the County Highway Agency.