US Bridges

Nfa A979 over Dry Fork Creek

Good

Sumner County, Tennessee · 5.8 MI S JCT SR 52&SR 174 · Structure no. 830A9790001

Built
1983
42 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete Continuous
Length
38 ft
2 main spans
Daily traffic
200
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A979 over Dry Fork Creek is a concrete continuous culvert carrying Nfa A979 over Dry Fork Creek in Sumner 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 200 vehicles a day, roughly 4% of them trucks, projected to reach 320 by 2041. The structure is 38 ft (11.6 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNfa A979
CrossesDry Fork Creek
Location5.8 MI S JCT SR 52&SR 174
RouteCounty Highway 0A979
Coordinates36.48498, -86.40272
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating39.7 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2020)
Projected traffic320 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$271,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A979 over Dry Fork Creek built?

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

What condition is Nfa A979 over Dry Fork Creek 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 November 2024.

How much traffic does Nfa A979 over Dry Fork Creek carry?

About 200 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A979 over Dry Fork Creek?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m) and a deck 24 ft wide.

Who owns Nfa A979 over Dry Fork Creek?

It is owned by the County Highway Agency.