US Bridges

Nfa 979 (sa 1109) over Sugar Fork Creek

Good

Cheatham County, Tennessee · 2.1 M. Ne. SR12. · Structure no. 11009790017

Built
1969
56 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
300
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 979 (sa 1109) over Sugar Fork Creek is a concrete culvert carrying Nfa 979 (sa 1109) over Sugar Fork Creek in Cheatham County, Tennessee. It was built in 1969, so it is 56 years old, older 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 300 vehicles a day, roughly 3% of them trucks, projected to reach 432 by 2040. The structure is 20 ft (6.1 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesNfa 979 (sa 1109)
CrossesSugar Fork Creek
Location2.1 M. Ne. SR12.
RouteCounty Highway 979
Coordinates36.35975, -87.12185
Functional classRural Minor Collector

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.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.7 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2021)
Projected traffic432 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$85,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 979 (sa 1109) over Sugar Fork Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Nfa 979 (sa 1109) over Sugar 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 August 2024.

How much traffic does Nfa 979 (sa 1109) over Sugar Fork Creek carry?

About 300 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 979 (sa 1109) over Sugar Fork Creek?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 22 ft wide.

Who owns Nfa 979 (sa 1109) over Sugar Fork Creek?

It is owned by the County Highway Agency.