US Bridges

I73/74 US220N over SR1500

Fair

Montgomery County, North Carolina · 0.4 Mi. S. Jct. NC24&27 · Structure no. 000000001230021

Built
1978
47 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
158 ft
3 main spans
Daily traffic
7,750
2020 count
Owner
State
State Highway Agency

About this bridge

I73/74 US220N over SR1500 is a steel continuous stringer/multi-beam or girder carrying I73/74 US220N over SR1500 in Montgomery County, North Carolina. It was built in 1978, so it is 47 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 7,750 vehicles a day, roughly 23% of them trucks, projected to reach 15,500 by 2040. The structure is 158 ft (48.1 m) long and 42 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI73/74 US220N
CrossesSR1500
Location0.4 Mi. S. Jct. NC24&27
RouteInterstate 73
Coordinates35.35661, -79.76497
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.9 US tons
Inventory rating56 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length158 ft (48.1 m)
Longest span74 ft (22.5 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,750 (2020)
Projected traffic15,500 by 2040
Trucks23%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I73/74 US220N over SR1500 built?

It was built in 1978, making it 47 years old in 2025.

What condition is I73/74 US220N over SR1500 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 December 2023.

How much traffic does I73/74 US220N over SR1500 carry?

About 7,750 vehicles per day (2020 count), of which roughly 23% are trucks.

How long is I73/74 US220N over SR1500?

The structure is 158 ft (48.1 m) long with a longest span of 74 ft (22.5 m) and a deck 42 ft wide.

Who owns I73/74 US220N over SR1500?

It is owned by the State Highway Agency.