US Bridges

Nfa A412 over Garrison Fork Creek

Good

Coffee County, Tennessee · .1 MI from Gossburg RD · Structure no. 160A4120001

Built
1965
60 years old
Condition
Good
inspected January 2024
Type
Tee Beam
Concrete
Length
43 ft
1 main span
Daily traffic
170
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A412 over Garrison Fork Creek is a concrete tee beam carrying Nfa A412 over Garrison Fork Creek in Coffee County, Tennessee. It was built in 1965, so it is 60 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 170 vehicles a day, roughly 2% of them trucks, projected to reach 272 by 2040. The structure is 43 ft (13.1 m) long and 22 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesNfa A412
CrossesGarrison Fork Creek
Location.1 MI from Gossburg RD
RouteCounty Highway 412
Coordinates35.66418, -86.2152
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 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 alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span41 ft (12.6 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2020)
Projected traffic272 by 2040
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 statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$158,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A412 over Garrison Fork Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Nfa A412 over Garrison 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 January 2024.

How much traffic does Nfa A412 over Garrison Fork Creek carry?

About 170 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A412 over Garrison Fork Creek?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.6 m) and a deck 22 ft wide.

Who owns Nfa A412 over Garrison Fork Creek?

It is owned by the County Highway Agency.