US Bridges

I75 Rmp A-A over I75-NB Flyover / 4 Rts.

Good

Knox County, Tennessee · Sharps Gap Interchange · Structure no. 47I00750053

Built
1981
44 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,331 ft
11 main spans
Daily traffic
94,386
2021 count
Owner
State
State Highway Agency

About this bridge

I75 Rmp A-A over I75-NB Flyover / 4 Rts. is a steel continuous stringer/multi-beam or girder carrying I75 Rmp A-A over I75-NB Flyover / 4 Rts. in Knox County, Tennessee. It was built in 1981, so it is 44 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 94,386 vehicles a day, roughly 6% of them trucks, projected to reach 44,848 by 2041. The structure is 1,331 ft (405.8 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI75 Rmp A-A
CrossesI75-NB Flyover / 4 Rts.
LocationSharps Gap Interchange
RouteInterstate 75
CountyKnox County
StateTennessee
Coordinates35.99792, -83.95918
Functional classUrban Principal Arterial - Interstate

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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length1,331 ft (405.8 m)
Longest span140 ft (42.7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic94,386 (2021)
Projected traffic44,848 by 2041
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I75 Rmp A-A over I75-NB Flyover / 4 Rts. built?

It was built in 1981, making it 44 years old in 2025.

What condition is I75 Rmp A-A over I75-NB Flyover / 4 Rts. 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 January 2025.

How much traffic does I75 Rmp A-A over I75-NB Flyover / 4 Rts. carry?

About 94,386 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I75 Rmp A-A over I75-NB Flyover / 4 Rts.?

The structure is 1,331 ft (405.8 m) long with a longest span of 140 ft (42.7 m) and a deck 32 ft wide.

Who owns I75 Rmp A-A over I75-NB Flyover / 4 Rts.?

It is owned by the State Highway Agency.