US Bridges

Nfa A170 over Branch

Good

Hardeman County, Tennessee · 0.25 MI S of SR57 · Structure no. 350A1700001

Built
1983
42 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A170 over Branch is a concrete continuous culvert carrying Nfa A170 over Branch in Hardeman County, Tennessee. It was built in 1983, so it is 42 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 50 vehicles a day, roughly 6% of them trucks, projected to reach 80 by 2040. The structure is 34 ft (10.4 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNfa A170
CrossesBranch
Location0.25 MI S of SR57
RouteCounty Highway 170
Coordinates35.0411, -88.86222
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment6: Equal to present minimum criteria
Operating rating66 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span10 ft (3.1 m)
Deck width27 ft (8.1 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic80 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 A170 over Branch built?

It was built in 1983, making it 42 years old in 2025.

What condition is Nfa A170 over 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 July 2024.

How much traffic does Nfa A170 over Branch carry?

About 50 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Nfa A170 over Branch?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3.1 m) and a deck 27 ft wide.

Who owns Nfa A170 over Branch?

It is owned by the County Highway Agency.