US Bridges

I77 over Greenway

Fair

Mecklenburg County, North Carolina · 0.2 Mi. N. Jct. US29 · Structure no. 000000001190227

Built
1972
53 years old, rebuilt 1996
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
204 ft
3 main spans
Daily traffic
138,000
2022 count
Owner
State
State Highway Agency

About this bridge

I77 over Greenway is a steel stringer/multi-beam or girder carrying I77 over Greenway in Mecklenburg County, North Carolina. It was built in 1972 and reconstructed in 1996, so it is 53 years old, older 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 138,000 vehicles a day, roughly 16% of them trucks, projected to reach 276,000 by 2040. The structure is 204 ft (62.1 m) long and 157 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI77
CrossesGreenway
Location0.2 Mi. N. Jct. US29
RouteInterstate 77
CountyMecklenburg County
StateNorth Carolina
Coordinates35.2312, -80.85959
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating50.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length204 ft (62.1 m)
Longest span97 ft (29.5 m)
Deck width157 ft (48 m)
Roadway width153 ft (46.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic138,000 (2022)
Projected traffic276,000 by 2040
Trucks16%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I77 over Greenway built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 1996.

What condition is I77 over Greenway 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 September 2024.

How much traffic does I77 over Greenway carry?

About 138,000 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is I77 over Greenway?

The structure is 204 ft (62.1 m) long with a longest span of 97 ft (29.5 m) and a deck 157 ft wide.

Who owns I77 over Greenway?

It is owned by the State Highway Agency.