US Bridges

Nfa A179 over Simms Branch

Fair

White County, Tennessee · 5MI Worth of US 70 · Structure no. 930A1790001

Built
1960
65 years old, rebuilt 2002
Condition
Fair
inspected February 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
100
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A179 over Simms Branch is a prestressed concrete box beam or girders - single or spread carrying Nfa A179 over Simms Branch in White County, Tennessee. It was built in 1960 and reconstructed in 2002, so it is 65 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.

It carries about 100 vehicles a day, roughly 2% of them trucks, projected to reach 160 by 2042. The structure is 29 ft (8.8 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNfa A179
CrossesSimms Branch
Location5MI Worth of US 70
RouteCounty Highway 179
CountyWhite County
StateTennessee
Coordinates35.9864, -85.38004
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating24.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span29 ft (8.8 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic160 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 A179 over Simms Branch built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2002.

What condition is Nfa A179 over Simms 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 February 2024.

How much traffic does Nfa A179 over Simms Branch carry?

About 100 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A179 over Simms Branch?

The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.8 m) and a deck 24 ft wide.

Who owns Nfa A179 over Simms Branch?

It is owned by the County Highway Agency.