US Bridges

Nfa B940 over Spencer Creek

Good

Wilson County, Tennessee · 4.3 KM E. of SR109/US70 · Structure no. 950B9400001

Built
2018
7 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
52 ft
1 main span
Daily traffic
1,000
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa B940 over Spencer Creek is a wood or timber stringer/multi-beam or girder carrying Nfa B940 over Spencer Creek in Wilson County, Tennessee. It was built in 2018, so it is 7 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 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,600 by 2040. The structure is 52 ft (15.8 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNfa B940
CrossesSpencer Creek
Location4.3 KM E. of SR109/US70
RouteCity Street 0B940
Coordinates36.231, -86.38711
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span52 ft (15.8 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2020)
Projected traffic1,600 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$869,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa B940 over Spencer Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is Nfa B940 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 March 2024.

How much traffic does Nfa B940 over Spencer Creek carry?

About 1,000 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Nfa B940 over Spencer Creek?

The structure is 52 ft (15.8 m) long with a longest span of 52 ft (15.8 m) and a deck 32 ft wide.

Who owns Nfa B940 over Spencer Creek?

It is owned by the City or Municipal Highway Agency.