US Bridges

Nfa B415 over Spencer Creek

Good

Wilson County, Tennessee · 6.4 KM E. of SR24/SR109 · Structure no. 950B4150001

Built
1976
49 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete Continuous
Length
20 ft
2 main spans
Daily traffic
500
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa B415 over Spencer Creek is a concrete continuous culvert carrying Nfa B415 over Spencer Creek in Wilson County, Tennessee. It was built in 1976, so it is 49 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 500 vehicles a day, roughly 2% of them trucks, projected to reach 800 by 2040. The structure is 20 ft (6.2 m) long and 31 ft wide. If it were closed, the detour would be 61.5 mi (99 km).

CarriesNfa B415
CrossesSpencer Creek
Location6.4 KM E. of SR24/SR109
RouteCity Street 0B415
Coordinates36.22063, -86.37059
Functional classUrban 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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length20 ft (6.2 m)
Longest span10 ft (3 m)
Deck width31 ft (9.5 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2020)
Projected traffic800 by 2040
Trucks2%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed61.5 mi (99 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 B415 over Spencer Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Nfa B415 over Spencer 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 February 2024.

How much traffic does Nfa B415 over Spencer Creek carry?

About 500 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa B415 over Spencer Creek?

The structure is 20 ft (6.2 m) long with a longest span of 10 ft (3 m) and a deck 31 ft wide.

Who owns Nfa B415 over Spencer Creek?

It is owned by the City or Municipal Highway Agency.