US Bridges

Nfa 1947 (sa 7420) over Wartrace Creek

Good

Robertson County, Tennessee · 3.7 MI SE JCT SR11&SR65 · Structure no. 74019470003

Built
2003
22 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
2,752
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1947 (sa 7420) over Wartrace Creek is a concrete continuous culvert carrying Nfa 1947 (sa 7420) over Wartrace Creek in Robertson County, Tennessee. It was built in 2003, so it is 22 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 2,752 vehicles a day, roughly 1% of them trucks, projected to reach 4,064 by 2040. The structure is 26 ft (7.8 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNfa 1947 (sa 7420)
CrossesWartrace Creek
Location3.7 MI SE JCT SR11&SR65
RouteCounty Highway 1947
Coordinates36.46003, -86.82668
Functional classUrban Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 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 rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length26 ft (7.8 m)
Longest span12 ft (3.7 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,752 (2021)
Projected traffic4,064 by 2040
Trucks1%
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 1947 (sa 7420) over Wartrace Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is Nfa 1947 (sa 7420) over Wartrace 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 March 2024.

How much traffic does Nfa 1947 (sa 7420) over Wartrace Creek carry?

About 2,752 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Nfa 1947 (sa 7420) over Wartrace Creek?

The structure is 26 ft (7.8 m) long with a longest span of 12 ft (3.7 m) and a deck 33 ft wide.

Who owns Nfa 1947 (sa 7420) over Wartrace Creek?

It is owned by the County Highway Agency.