US Bridges

Nfa 1390 over Dedman Branch

Good

Wilson County, Tennessee · 0.5 MI West of SR266 · Structure no. 950A3520001

Built
1960
65 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
550
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1390 over Dedman Branch is a concrete continuous culvert carrying Nfa 1390 over Dedman Branch in Wilson County, Tennessee. It was built in 1960, so it is 65 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 550 vehicles a day, roughly 3% of them trucks, projected to reach 688 by 2040. The structure is 30 ft (9.1 m) long and 24 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesNfa 1390
CrossesDedman Branch
Location0.5 MI West of SR266
RouteCounty Highway 1390
CountyWilson County
StateTennessee
Coordinates36.13198, -86.2779
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJune 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 alignment6: Equal to present minimum criteria
Operating rating62.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span14 ft (4.3 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2021)
Projected traffic688 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$110,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1390 over Dedman Branch built?

It was built in 1960, making it 65 years old in 2025.

What condition is Nfa 1390 over Dedman Branch 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 June 2024.

How much traffic does Nfa 1390 over Dedman Branch carry?

About 550 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1390 over Dedman Branch?

The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.3 m) and a deck 24 ft wide.

Who owns Nfa 1390 over Dedman Branch?

It is owned by the County Highway Agency.