US Bridges

I77 Ramp over SR1128

Fair

Mecklenburg County, North Carolina · 1.8 Mi. S. Jct. SR1138 · Structure no. 000000001190601

Built
1992
33 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
176 ft
3 main spans
Daily traffic
24,150
2019 count
Owner
State
State Highway Agency

About this bridge

I77 Ramp over SR1128 is a steel stringer/multi-beam or girder carrying I77 Ramp over SR1128 in Mecklenburg County, North Carolina. It was built in 1992, so it is 33 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 24,150 vehicles a day, roughly 16% of them trucks, projected to reach 48,300 by 2040. The structure is 176 ft (53.6 m) long and 51 ft wide.

CarriesI77 Ramp
CrossesSR1128
Location1.8 Mi. S. Jct. SR1138
RouteInterstate 77
Coordinates35.11443, -80.92338
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.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.9 US tons
Inventory rating58 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length176 ft (53.6 m)
Longest span120 ft (36.5 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,150 (2019)
Projected traffic48,300 by 2040
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I77 Ramp over SR1128 built?

It was built in 1992, making it 33 years old in 2025.

What condition is I77 Ramp over SR1128 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 SR1128 carry?

About 24,150 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is I77 Ramp over SR1128?

The structure is 176 ft (53.6 m) long with a longest span of 120 ft (36.5 m) and a deck 51 ft wide.

Who owns I77 Ramp over SR1128?

It is owned by the State Highway Agency.