US Bridges

I485 Wbl Collector over I77

Good

Mecklenburg County, North Carolina · 0.2 Mi. W. Jct. US21 · Structure no. 000000001190963

Built
2008
17 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
368 ft
3 main spans
Daily traffic
65,000
2020 count
Owner
State
State Highway Agency

About this bridge

I485 Wbl Collector over I77 is a steel continuous stringer/multi-beam or girder carrying I485 Wbl Collector over I77 in Mecklenburg County, North Carolina. It was built in 2008, so it is 17 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 368 ft (112.1 m) long and 48 ft wide.

Location

Open in Google Maps
CarriesI485 Wbl Collector
CrossesI77
Location0.2 Mi. W. Jct. US21
RouteInterstate 485
CountyMecklenburg County
StateNorth Carolina
Coordinates35.36414, -80.84186
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating66.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length368 ft (112.1 m)
Longest span132 ft (40.2 m)
Deck width48 ft (14.7 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic65,000 (2020)
Projected traffic130,000 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I485 Wbl Collector over I77 built?

It was built in 2008, making it 17 years old in 2025.

What condition is I485 Wbl Collector over I77 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 April 2023.

How much traffic does I485 Wbl Collector over I77 carry?

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

How long is I485 Wbl Collector over I77?

The structure is 368 ft (112.1 m) long with a longest span of 132 ft (40.2 m) and a deck 48 ft wide.

Who owns I485 Wbl Collector over I77?

It is owned by the State Highway Agency.