US Bridges

I-77 NB over I-77 Northbound

Good

Mecklenburg County, North Carolina · 0.5MI.N.JCT. Lasalle ST · Structure no. 000000001191339

Built
2019
6 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
453 ft
4 main spans
Daily traffic
65,000
2020 count
Owner
State
State Highway Agency

About this bridge

I-77 NB over I-77 Northbound is a prestressed concrete stringer/multi-beam or girder carrying I-77 NB over I-77 Northbound in Mecklenburg County, North Carolina. It was built in 2019, so it is 6 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 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 65,000 vehicles a day, roughly 16% of them trucks, projected to reach 130,000 by 2040. The structure is 453 ft (138 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-77 NB
CrossesI-77 Northbound
Location0.5MI.N.JCT. Lasalle ST
CountyMecklenburg County
StateNorth Carolina
Coordinates35.26758, -80.84491
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating53.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 10
Structure length453 ft (138 m)
Longest span117 ft (35.6 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65,000 (2020)
Projected traffic130,000 by 2040
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a toll 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 I-77 NB over I-77 Northbound built?

It was built in 2019, making it 6 years old in 2025.

What condition is I-77 NB over I-77 Northbound 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 March 2024.

How much traffic does I-77 NB over I-77 Northbound carry?

About 65,000 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I-77 NB over I-77 Northbound?

The structure is 453 ft (138 m) long with a longest span of 117 ft (35.6 m) and a deck 41 ft wide.

Who owns I-77 NB over I-77 Northbound?

It is owned by the State Highway Agency.