US Bridges

Nfa A356 over East Fork Dog Branch

Fair

Giles County, Tennessee · 5 M NW of Prospect · Structure no. 280A3560001

Built
1994
31 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
160
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A356 over East Fork Dog Branch is a concrete continuous culvert carrying Nfa A356 over East Fork Dog Branch in Giles County, Tennessee. It was built in 1994, so it is 31 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 160 vehicles a day, roughly 2% of them trucks, projected to reach 256 by 2042. The structure is 34 ft (10.5 m) long and 29 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesNfa A356
CrossesEast Fork Dog Branch
Location5 M NW of Prospect
RouteCounty Highway 356
CountyGiles County
StateTennessee
Coordinates35.07837, -87.07375
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.6 US tons
Inventory rating28.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length34 ft (10.5 m)
Longest span12 ft (3.7 m)
Deck width29 ft (8.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2020)
Projected traffic256 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A356 over East Fork Dog Branch built?

It was built in 1994, making it 31 years old in 2025.

What condition is Nfa A356 over East Fork Dog 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 March 2024.

How much traffic does Nfa A356 over East Fork Dog Branch carry?

About 160 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A356 over East Fork Dog Branch?

The structure is 34 ft (10.5 m) long with a longest span of 12 ft (3.7 m) and a deck 29 ft wide.

Who owns Nfa A356 over East Fork Dog Branch?

It is owned by the County Highway Agency.