US Bridges

I 485 Outer Loop over I 85 Nbl & Sbl

Good

Mecklenburg County, North Carolina · 1.24 Mi. W. of Jct. US 29 · Structure no. 000000001191325

Built
2015
10 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
258 ft
2 main spans
Daily traffic
52,875
2022 count
Owner
State
State Highway Agency

About this bridge

I 485 Outer Loop over I 85 Nbl & Sbl is a prestressed concrete stringer/multi-beam or girder carrying I 485 Outer Loop over I 85 Nbl & Sbl in Mecklenburg County, North Carolina. It was built in 2015, so it is 10 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 52,875 vehicles a day, roughly 16% of them trucks, projected to reach 105,750 by 2040. The structure is 258 ft (78.6 m) long and 63 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI 485 Outer Loop
CrossesI 85 Nbl & Sbl
Location1.24 Mi. W. of Jct. US 29
RouteInterstate 485
Coordinates35.3485, -80.73331
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 inspectionNovember 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 rating94.9 US tons
Inventory rating56 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length258 ft (78.6 m)
Longest span128 ft (39 m)
Deck width63 ft (19.2 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,875 (2022)
Projected traffic105,750 by 2040
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
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 I 485 Outer Loop over I 85 Nbl & Sbl built?

It was built in 2015, making it 10 years old in 2025.

What condition is I 485 Outer Loop over I 85 Nbl & 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 November 2024.

How much traffic does I 485 Outer Loop over I 85 Nbl & Sbl carry?

About 52,875 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is I 485 Outer Loop over I 85 Nbl & Sbl?

The structure is 258 ft (78.6 m) long with a longest span of 128 ft (39 m) and a deck 63 ft wide.

Who owns I 485 Outer Loop over I 85 Nbl & Sbl?

It is owned by the State Highway Agency.