US Bridges

I85S US15N US70 over US 501 Bus

Good

Durham County, North Carolina · 0.19MI S. of JCT NC55 · Structure no. 000000000630162

Built
2006
19 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
194 ft
3 main spans
Daily traffic
47,500
2021 count
Owner
State
State Highway Agency

About this bridge

I85S US15N US70 over US 501 Bus is a steel stringer/multi-beam or girder carrying I85S US15N US70 over US 501 Bus in Durham County, North Carolina. It was built in 2006, so it is 19 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 47,500 vehicles a day, roughly 16% of them trucks, projected to reach 95,000 by 2040. The structure is 194 ft (59.1 m) long and 74 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI85S US15N US70
CrossesUS 501 Bus
Location0.19MI S. of JCT NC55
RouteInterstate 85
Coordinates36.01479, -78.89038
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.9 US tons
Inventory rating48 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length194 ft (59.1 m)
Longest span114 ft (34.7 m)
Deck width74 ft (22.5 m)
Roadway width71 ft (21.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47,500 (2021)
Projected traffic95,000 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 I85S US15N US70 over US 501 Bus built?

It was built in 2006, making it 19 years old in 2025.

What condition is I85S US15N US70 over US 501 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 2024.

How much traffic does I85S US15N US70 over US 501 Bus carry?

About 47,500 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is I85S US15N US70 over US 501 Bus?

The structure is 194 ft (59.1 m) long with a longest span of 114 ft (34.7 m) and a deck 74 ft wide.

Who owns I85S US15N US70 over US 501 Bus?

It is owned by the State Highway Agency.