US Bridges

Nfa 5520 (sa 9508) over Nfa 5520 / I40

Fair

Wilson County, Tennessee · OVERHEAD/I40 · Structure no. 95I00400023

Built
1963
62 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete Continuous
Length
247 ft
4 main spans
Daily traffic
2,743
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa 5520 (sa 9508) over Nfa 5520 / I40 is a concrete continuous tee beam carrying Nfa 5520 (sa 9508) over Nfa 5520 / I40 in Wilson County, Tennessee. It was built in 1963, so it is 62 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,743 vehicles a day, roughly 3% of them trucks, projected to reach 4,389 by 2042. The structure is 247 ft (75.3 m) long and 34 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesNfa 5520 (sa 9508)
CrossesNfa 5520 / I40
LocationOVERHEAD/I40
RouteCounty Highway 5520
CountyWilson County
StateTennessee
Coordinates36.18235, -86.30648
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating28.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length247 ft (75.3 m)
Longest span70 ft (21.3 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,743 (2021)
Projected traffic4,389 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa 5520 (sa 9508) over Nfa 5520 / I40 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Nfa 5520 (sa 9508) over Nfa 5520 / I40 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does Nfa 5520 (sa 9508) over Nfa 5520 / I40 carry?

About 2,743 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 5520 (sa 9508) over Nfa 5520 / I40?

The structure is 247 ft (75.3 m) long with a longest span of 70 ft (21.3 m) and a deck 34 ft wide.

Who owns Nfa 5520 (sa 9508) over Nfa 5520 / I40?

It is owned by the State Highway Agency.