US Bridges

I77 Nbl US21 Nbl over US29 NC27(MOREHEAD St.)

Fair

Mecklenburg County, North Carolina · 0.38 Mi. N. Jct. US74 · Structure no. 000000001190221

Built
1970
55 years old, rebuilt 1996
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
179 ft
3 main spans
Daily traffic
60,000
2020 count
Owner
State
State Highway Agency

About this bridge

I77 Nbl US21 Nbl over US29 NC27(MOREHEAD St.) is a steel stringer/multi-beam or girder carrying I77 Nbl US21 Nbl over US29 NC27(MOREHEAD St.) in Mecklenburg County, North Carolina. It was built in 1970 and reconstructed in 1996, so it is 55 years old, older than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 60,000 vehicles a day, roughly 16% of them trucks, projected to reach 120,000 by 2040. The structure is 179 ft (54.5 m) long and 68 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI77 Nbl US21 Nbl
CrossesUS29 NC27(MOREHEAD St.)
Location0.38 Mi. N. Jct. US74
RouteInterstate 77
Coordinates35.22903, -80.86042
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length179 ft (54.5 m)
Longest span95 ft (28.9 m)
Deck width68 ft (20.8 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60,000 (2020)
Projected traffic120,000 by 2040
Trucks16%
Lanes on structure4
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 I77 Nbl US21 Nbl over US29 NC27(MOREHEAD St.) built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1996.

What condition is I77 Nbl US21 Nbl over US29 NC27(MOREHEAD St.) in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does I77 Nbl US21 Nbl over US29 NC27(MOREHEAD St.) carry?

About 60,000 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I77 Nbl US21 Nbl over US29 NC27(MOREHEAD St.)?

The structure is 179 ft (54.5 m) long with a longest span of 95 ft (28.9 m) and a deck 68 ft wide.

Who owns I77 Nbl US21 Nbl over US29 NC27(MOREHEAD St.)?

It is owned by the State Highway Agency.