US Bridges

FAP 34 over Forge Creek

Good

Johnson County, Tennessee · .4 M S of Triplett RD · Structure no. 46SR0340007

Built
1954
71 years old, rebuilt 1984
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
47 ft
3 main spans
Daily traffic
5,818
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 34 over Forge Creek is a concrete continuous culvert carrying FAP 34 over Forge Creek in Johnson County, Tennessee. It was built in 1954 and reconstructed in 1984, so it is 71 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 5,818 vehicles a day, roughly 5% of them trucks, projected to reach 9,309 by 2042. The structure is 47 ft (14.2 m) long and 86 ft wide. If it were closed, the detour would be 52.2 mi (84 km).

CarriesFAP 34
CrossesForge Creek
Location.4 M S of Triplett RD
RouteU.S. Route 421
Coordinates36.43372, -81.78545
Functional classRural Minor Arterial

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length47 ft (14.2 m)
Longest span15 ft (4.6 m)
Deck width86 ft (26.3 m)
Roadway width66 ft (20.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,818 (2021)
Projected traffic9,309 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed52.2 mi (84 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$626,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAP 34 over Forge Creek built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1984.

What condition is FAP 34 over Forge 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 September 2024.

How much traffic does FAP 34 over Forge Creek carry?

About 5,818 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FAP 34 over Forge Creek?

The structure is 47 ft (14.2 m) long with a longest span of 15 ft (4.6 m) and a deck 86 ft wide.

Who owns FAP 34 over Forge Creek?

It is owned by the State Highway Agency.