US Bridges

Nfa 2317 (sa 7015) over Turtletown Creek

Good

Polk County, Tennessee · 1.5 MI NW JCT SR68&SR123 · Structure no. 70S43150003

Built
2019
6 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
157 ft
2 main spans
Daily traffic
148
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 2317 (sa 7015) over Turtletown Creek is a prestressed concrete stringer/multi-beam or girder carrying Nfa 2317 (sa 7015) over Turtletown Creek in Polk County, Tennessee. It was built in 2019, so it is 6 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 148 vehicles a day, roughly 3% of them trucks, projected to reach 237 by 2042. The structure is 157 ft (47.9 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 2317 (sa 7015)
CrossesTurtletown Creek
Location1.5 MI NW JCT SR68&SR123
RouteCounty Highway 2317
CountyPolk County
StateTennessee
Coordinates35.14582, -84.3307
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length157 ft (47.9 m)
Longest span79 ft (24.1 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic148 (2021)
Projected traffic237 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 2317 (sa 7015) over Turtletown Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is Nfa 2317 (sa 7015) over Turtletown 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 May 2024.

How much traffic does Nfa 2317 (sa 7015) over Turtletown Creek carry?

About 148 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 2317 (sa 7015) over Turtletown Creek?

The structure is 157 ft (47.9 m) long with a longest span of 79 ft (24.1 m) and a deck 24 ft wide.

Who owns Nfa 2317 (sa 7015) over Turtletown Creek?

It is owned by the County Highway Agency.