US Bridges

Nfa A008 over I840

Good

Rutherford County, Tennessee · 1.5 MI E Jct. I24&I840 · Structure no. 75SR8400011

Built
1997
28 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
406 ft
2 main spans
Daily traffic
3,590
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A008 over I840 is a steel continuous stringer/multi-beam or girder carrying Nfa A008 over I840 in Rutherford County, Tennessee. It was built in 1997, so it is 28 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 3,590 vehicles a day, roughly 8% of them trucks, projected to reach 5,744 by 2041. The structure is 406 ft (123.7 m) long and 36 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesNfa A008
CrossesI840
Location1.5 MI E Jct. I24&I840
RouteCounty Highway 0A008
Coordinates35.8709, -86.50087
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.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating82.5 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length406 ft (123.7 m)
Longest span203 ft (61.9 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,590 (2020)
Projected traffic5,744 by 2041
Trucks8%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A008 over I840 built?

It was built in 1997, making it 28 years old in 2025.

What condition is Nfa A008 over I840 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 October 2024.

How much traffic does Nfa A008 over I840 carry?

About 3,590 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Nfa A008 over I840?

The structure is 406 ft (123.7 m) long with a longest span of 203 ft (61.9 m) and a deck 36 ft wide.

Who owns Nfa A008 over I840?

It is owned by the State Highway Agency.