US Bridges

Nfa A121 over Nfa A121/I40

Fair

Madison County, Tennessee · 2.6 MI W JCT SR1&SR20 · Structure no. 57I00400033

Built
2021
4 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
249 ft
2 main spans
Daily traffic
2,380
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A121 over Nfa A121/I40 is a steel continuous stringer/multi-beam or girder carrying Nfa A121 over Nfa A121/I40 in Madison County, Tennessee. It was built in 2021, so it is 4 years old, younger 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 6 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 2,380 vehicles a day, roughly 6% of them trucks, projected to reach 3,808 by 2042. The structure is 249 ft (75.9 m) long and 33 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesNfa A121
CrossesNfa A121/I40
Location2.6 MI W JCT SR1&SR20
RouteCounty Highway 121
CountyMadison County
StateTennessee
Coordinates35.67661, -88.79372
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length249 ft (75.9 m)
Longest span124 ft (37.9 m)
Deck width33 ft (10.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,380 (2020)
Projected traffic3,808 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$919,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A121 over Nfa A121/I40 built?

It was built in 2021, making it 4 years old in 2025.

What condition is Nfa A121 over Nfa A121/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 April 2023.

How much traffic does Nfa A121 over Nfa A121/I40 carry?

About 2,380 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Nfa A121 over Nfa A121/I40?

The structure is 249 ft (75.9 m) long with a longest span of 124 ft (37.9 m) and a deck 33 ft wide.

Who owns Nfa A121 over Nfa A121/I40?

It is owned by the State Highway Agency.