US Bridges

Nfa A988 over Overflow

Good

Wilson County, Tennessee · 4.8 KM Ne. of I40/US231 · Structure no. 950A9880003

Built
1991
34 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
60 ft
1 main span
Daily traffic
8,220
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A988 over Overflow is a concrete stringer/multi-beam or girder carrying Nfa A988 over Overflow in Wilson County, Tennessee. It was built in 1991, so it is 34 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 8,220 vehicles a day, roughly 3% of them trucks, projected to reach 13,152 by 2042. The structure is 60 ft (18.3 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNfa A988
CrossesOverflow
Location4.8 KM Ne. of I40/US231
RouteCity Street 0A988
Coordinates36.20152, -86.28057
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 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 rating46.7 US tons
Inventory rating36 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width53 ft (16.2 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,220 (2020)
Projected traffic13,152 by 2042
Trucks3%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$203,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A988 over Overflow built?

It was built in 1991, making it 34 years old in 2025.

What condition is Nfa A988 over Overflow 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 A988 over Overflow carry?

About 8,220 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Nfa A988 over Overflow?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 53 ft wide.

Who owns Nfa A988 over Overflow?

It is owned by the City or Municipal Highway Agency.