US Bridges

FAP 20 over Johnson Creek

Good

Decatur County, Tennessee · .87 Mi.West of Parsons · Structure no. 20SR0200003

Built
2011
14 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
140 ft
1 main span
Daily traffic
6,482
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 20 over Johnson Creek is a prestressed concrete stringer/multi-beam or girder carrying FAP 20 over Johnson Creek in Decatur County, Tennessee. It was built in 2011, so it is 14 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 6,482 vehicles a day, roughly 10% of them trucks, projected to reach 9,072 by 2040. The structure is 140 ft (42.7 m) long and 87 ft wide. If it were closed, the detour would be 54.1 mi (87 km).

CarriesFAP 20
CrossesJohnson Creek
Location.87 Mi.West of Parsons
RouteState Highway 20
Coordinates35.64288, -88.16364
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length140 ft (42.7 m)
Longest span140 ft (42.7 m)
Deck width87 ft (26.4 m)
Roadway width84 ft (25.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,482 (2021)
Projected traffic9,072 by 2040
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed54.1 mi (87 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAP 20 over Johnson Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is FAP 20 over Johnson 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 December 2023.

How much traffic does FAP 20 over Johnson Creek carry?

About 6,482 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is FAP 20 over Johnson Creek?

The structure is 140 ft (42.7 m) long with a longest span of 140 ft (42.7 m) and a deck 87 ft wide.

Who owns FAP 20 over Johnson Creek?

It is owned by the State Highway Agency.