US Bridges

Nfa A103 over Negro Creek

Good

Polk County, Tennessee · 2.1 MI SW JCT SR68&SR123 · Structure no. 700A1030003

Built
2006
19 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
230
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A103 over Negro Creek is a concrete continuous culvert carrying Nfa A103 over Negro Creek in Polk County, Tennessee. It was built in 2006, so it is 19 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 230 vehicles a day, roughly 2% of them trucks, projected to reach 368 by 2040. The structure is 26 ft (7.9 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNfa A103
CrossesNegro Creek
Location2.1 MI SW JCT SR68&SR123
RouteCounty Highway 103
Coordinates35.10465, -84.3503
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width31 ft (9.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2020)
Projected traffic368 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Nfa A103 over Negro Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Nfa A103 over Negro 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 A103 over Negro Creek carry?

About 230 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A103 over Negro Creek?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 31 ft wide.

Who owns Nfa A103 over Negro Creek?

It is owned by the County Highway Agency.