US Bridges

I77 Ramp over I485 I77 Ramp

Fair

Mecklenburg County, North Carolina · 0.2 Mi. S. Jct. I77 · Structure no. 000000001190658

Built
1994
31 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
378 ft
2 main spans
Daily traffic
22,500
2022 count
Owner
State
State Highway Agency

About this bridge

I77 Ramp over I485 I77 Ramp is a steel continuous stringer/multi-beam or girder carrying I77 Ramp over I485 I77 Ramp in Mecklenburg County, North Carolina. It was built in 1994, so it is 31 years old, younger than the North Carolina average of 38.7 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 22,500 vehicles a day, roughly 16% of them trucks, projected to reach 45,000 by 2040. The structure is 378 ft (115.2 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI77 Ramp
CrossesI485 I77 Ramp
Location0.2 Mi. S. Jct. I77
RouteInterstate 77
CountyMecklenburg County
StateNorth Carolina
Coordinates35.12348, -80.91297
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length378 ft (115.2 m)
Longest span133 ft (40.5 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,500 (2022)
Projected traffic45,000 by 2040
Trucks16%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I77 Ramp over I485 I77 Ramp built?

It was built in 1994, making it 31 years old in 2025.

What condition is I77 Ramp over I485 I77 Ramp 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 August 2024.

How much traffic does I77 Ramp over I485 I77 Ramp carry?

About 22,500 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is I77 Ramp over I485 I77 Ramp?

The structure is 378 ft (115.2 m) long with a longest span of 133 ft (40.5 m) and a deck 35 ft wide.

Who owns I77 Ramp over I485 I77 Ramp?

It is owned by the State Highway Agency.