US Bridges

Nfa A175 over Nellie Branch

Good

Warren County, Tennessee · Center Hill Area · Structure no. 890B1850005

Built
1945
80 years old, rebuilt 2006
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
56 ft
2 main spans
Daily traffic
10
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A175 over Nellie Branch is a concrete continuous slab carrying Nfa A175 over Nellie Branch in Warren County, Tennessee. It was built in 1945 and reconstructed in 2006, so it is 80 years old, older 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 10 vehicles a day, roughly 4% of them trucks, projected to reach 16 by 2042. The structure is 56 ft (17.1 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A175
CrossesNellie Branch
LocationCenter Hill Area
RouteCounty Highway 175
CountyWarren County
StateTennessee
Coordinates35.56887, -85.65804
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length56 ft (17.1 m)
Longest span29 ft (8.9 m)
Deck width13 ft (4.1 m)
Roadway width11 ft (3.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2020)
Projected traffic16 by 2042
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$71,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A175 over Nellie Branch built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 2006.

What condition is Nfa A175 over Nellie Branch 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 April 2023.

How much traffic does Nfa A175 over Nellie Branch carry?

About 10 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A175 over Nellie Branch?

The structure is 56 ft (17.1 m) long with a longest span of 29 ft (8.9 m) and a deck 13 ft wide.

Who owns Nfa A175 over Nellie Branch?

It is owned by the County Highway Agency.