US Bridges

I277 Ramp over I77 Nbl & I277 Sbl

Good

Mecklenburg County, North Carolina · 0.65 Mi. W.JCT.NC49 · Structure no. 000000001190340

Built
2019
6 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
688 ft
8 main spans
Daily traffic
9,900
2021 count
Owner
State
State Highway Agency

About this bridge

I277 Ramp over I77 Nbl & I277 Sbl is a prestressed concrete stringer/multi-beam or girder carrying I277 Ramp over I77 Nbl & I277 Sbl 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 9,900 vehicles a day, roughly 16% of them trucks, projected to reach 19,800 by 2040. The structure is 688 ft (209.7 m) long and 41 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI277 Ramp
CrossesI77 Nbl & I277 Sbl
Location0.65 Mi. W.JCT.NC49
RouteInterstate 277
CountyMecklenburg County
StateNorth Carolina
Coordinates35.24372, -80.84714
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
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 rating72 US tons
Inventory rating54.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20 + Mod
Structure length688 ft (209.7 m)
Longest span114 ft (34.7 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,900 (2021)
Projected traffic19,800 by 2040
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed0.6 mi (1 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 I277 Ramp over I77 Nbl & I277 Sbl built?

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

What condition is I277 Ramp over I77 Nbl & I277 Sbl 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 2023.

How much traffic does I277 Ramp over I77 Nbl & I277 Sbl carry?

About 9,900 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is I277 Ramp over I77 Nbl & I277 Sbl?

The structure is 688 ft (209.7 m) long with a longest span of 114 ft (34.7 m) and a deck 41 ft wide.

Who owns I277 Ramp over I77 Nbl & I277 Sbl?

It is owned by the State Highway Agency.