US Bridges

I277 Nbl over US29 & NC27

Fair

Mecklenburg County, North Carolina · 0.5 Mi. N. Jct. I77 · Structure no. 000000001190507

Built
1987
38 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
234 ft
2 main spans
Daily traffic
44,250
2020 count
Owner
State
State Highway Agency

About this bridge

I277 Nbl over US29 & NC27 is a steel stringer/multi-beam or girder carrying I277 Nbl over US29 & NC27 in Mecklenburg County, North Carolina. It was built in 1987, so it is 38 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 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 44,250 vehicles a day, roughly 16% of them trucks, projected to reach 88,500 by 2040. The structure is 234 ft (71.3 m) long and 65 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI277 Nbl
CrossesUS29 & NC27
Location0.5 Mi. N. Jct. I77
RouteInterstate 277
CountyMecklenburg County
StateNorth Carolina
Coordinates35.22412, -80.85439
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating77.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length234 ft (71.3 m)
Longest span136 ft (41.4 m)
Deck width65 ft (19.8 m)
Roadway width62 ft (19 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,250 (2020)
Projected traffic88,500 by 2040
Trucks16%
Lanes on structure4
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 I277 Nbl over US29 & NC27 built?

It was built in 1987, making it 38 years old in 2025.

What condition is I277 Nbl over US29 & NC27 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 May 2024.

How much traffic does I277 Nbl over US29 & NC27 carry?

About 44,250 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I277 Nbl over US29 & NC27?

The structure is 234 ft (71.3 m) long with a longest span of 136 ft (41.4 m) and a deck 65 ft wide.

Who owns I277 Nbl over US29 & NC27?

It is owned by the State Highway Agency.