US Bridges

I-40 Ramp to I-77 over I-77

Good

Iredell County, North Carolina · 1.6MI W. Old Mocksville R · Structure no. 000000000970602

Built
2023
2 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
148 ft
2 main spans
Daily traffic
28,650
2018 count
Owner
State
State Highway Agency

About this bridge

I-40 Ramp to I-77 over I-77 is a prestressed concrete stringer/multi-beam or girder carrying I-40 Ramp to I-77 over I-77 in Iredell 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 28,650 vehicles a day, roughly 16% of them trucks, projected to reach 57,300 by 2040. The structure is 148 ft (45.1 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-40 Ramp to I-77
CrossesI-77
Location1.6MI W. Old Mocksville R
RouteInterstate 40
CountyIredell County
StateNorth Carolina
Coordinates35.811, -80.60085
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionJune 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 rating94.9 US tons
Inventory rating73 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length148 ft (45.1 m)
Longest span70 ft (21.3 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,650 (2018)
Projected traffic57,300 by 2040
Trucks16%
Lanes on structure2
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-40 Ramp to I-77 over I-77 built?

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

What condition is I-40 Ramp to I-77 over I-77 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 June 2023.

How much traffic does I-40 Ramp to I-77 over I-77 carry?

About 28,650 vehicles per day (2018 count), of which roughly 16% are trucks.

How long is I-40 Ramp to I-77 over I-77?

The structure is 148 ft (45.1 m) long with a longest span of 70 ft (21.3 m) and a deck 43 ft wide.

Who owns I-40 Ramp to I-77 over I-77?

It is owned by the State Highway Agency.