US Bridges

NC901 over I77

Fair

Iredell County, North Carolina · 0.2 Mi. N. Jct. SR1849 · Structure no. 000000000970023

Built
1972
53 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
231 ft
2 main spans
Daily traffic
7,800
2021 count
Owner
State
State Highway Agency

About this bridge

NC901 over I77 is a steel continuous stringer/multi-beam or girder carrying NC901 over I77 in Iredell County, North Carolina. It was built in 1972, so it is 53 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 5 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 7,800 vehicles a day, roughly 7% of them trucks, projected to reach 15,600 by 2040. The structure is 231 ft (70.4 m) long and 66 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNC901
CrossesI77
Location0.2 Mi. N. Jct. SR1849
RouteState Highway 901
CountyIredell County
StateNorth Carolina
Coordinates36.00741, -80.83355
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.9 US tons
Inventory rating54.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length231 ft (70.4 m)
Longest span116 ft (35.3 m)
Deck width66 ft (20.2 m)
Roadway width64 ft (19.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,800 (2021)
Projected traffic15,600 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.7 mi (6 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 NC901 over I77 built?

It was built in 1972, making it 53 years old in 2025.

What condition is NC901 over I77 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 June 2024.

How much traffic does NC901 over I77 carry?

About 7,800 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is NC901 over I77?

The structure is 231 ft (70.4 m) long with a longest span of 116 ft (35.3 m) and a deck 66 ft wide.

Who owns NC901 over I77?

It is owned by the State Highway Agency.