US Bridges

I-73N.RAMP over I85 Bus

Good

Guilford County, North Carolina · 0.7 Mi. N. Jct. SR1129 · Structure no. 000000000810797

Built
2003
22 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
317 ft
3 main spans
Daily traffic
18,166
2021 count
Owner
State
State Highway Agency

About this bridge

I-73N.RAMP over I85 Bus is a steel continuous stringer/multi-beam or girder carrying I-73N.RAMP over I85 Bus in Guilford County, North Carolina. It was built in 2003, so it is 22 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 18,166 vehicles a day, roughly 16% of them trucks, projected to reach 36,333 by 2040. The structure is 317 ft (96.6 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI-73N.RAMP
CrossesI85 Bus
Location0.7 Mi. N. Jct. SR1129
RouteInterstate 73
Coordinates36.00583, -79.85015
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.9 US tons
Inventory rating46 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20 + Mod
Structure length317 ft (96.6 m)
Longest span121 ft (36.8 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,166 (2021)
Projected traffic36,333 by 2040
Trucks16%
Lanes on structure2
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 I-73N.RAMP over I85 Bus built?

It was built in 2003, making it 22 years old in 2025.

What condition is I-73N.RAMP over I85 Bus 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 November 2023.

How much traffic does I-73N.RAMP over I85 Bus carry?

About 18,166 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is I-73N.RAMP over I85 Bus?

The structure is 317 ft (96.6 m) long with a longest span of 121 ft (36.8 m) and a deck 40 ft wide.

Who owns I-73N.RAMP over I85 Bus?

It is owned by the State Highway Agency.