US Bridges

Nfa A031 over Dry Branch

Good

Macon County, Tennessee · 7 M N of Eulia · Structure no. 560A0310001

Built
1992
33 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
120
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A031 over Dry Branch is a concrete continuous culvert carrying Nfa A031 over Dry Branch in Macon County, Tennessee. It was built in 1992, so it is 33 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 120 vehicles a day, roughly 2% of them trucks, projected to reach 192 by 2041. The structure is 35 ft (10.7 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesNfa A031
CrossesDry Branch
Location7 M N of Eulia
RouteCounty Highway 31
Coordinates36.62717, -86.17423
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.5 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span12 ft (3.7 m)
Deck width27 ft (8.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2020)
Projected traffic192 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 A031 over Dry Branch built?

It was built in 1992, making it 33 years old in 2025.

What condition is Nfa A031 over Dry 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 August 2023.

How much traffic does Nfa A031 over Dry Branch carry?

About 120 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A031 over Dry Branch?

The structure is 35 ft (10.7 m) long with a longest span of 12 ft (3.7 m) and a deck 27 ft wide.

Who owns Nfa A031 over Dry Branch?

It is owned by the County Highway Agency.