US Bridges

SR4979 over I485

Good

Mecklenburg County, North Carolina · 0.1 Mi. N. Jct. SR3628 · Structure no. 000000001190682

Built
2023
2 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
299 ft
2 main spans
Daily traffic
19,500
2018 count
Owner
State
State Highway Agency

About this bridge

SR4979 over I485 is a prestressed concrete stringer/multi-beam or girder carrying SR4979 over I485 in Mecklenburg County, North Carolina. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 19,500 vehicles a day, roughly 6% of them trucks, projected to reach 39,000 by 2040. The structure is 299 ft (91.1 m) long and 98 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesSR4979
CrossesI485
Location0.1 Mi. N. Jct. SR3628
RouteState Highway 4979
CountyMecklenburg County
StateNorth Carolina
Coordinates35.06299, -80.79629
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length299 ft (91.1 m)
Longest span148 ft (45.1 m)
Deck width98 ft (30 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,500 (2018)
Projected traffic39,000 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

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 SR4979 over I485 built?

It was built in 2023, making it 2 years old in 2025.

What condition is SR4979 over I485 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 SR4979 over I485 carry?

About 19,500 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is SR4979 over I485?

The structure is 299 ft (91.1 m) long with a longest span of 148 ft (45.1 m) and a deck 98 ft wide.

Who owns SR4979 over I485?

It is owned by the State Highway Agency.