US Bridges

US501 over I85 US15 US70

Good

Durham County, North Carolina · .21M. N. JCT SR1327 · Structure no. 000000000630425

Built
2006
19 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
343 ft
4 main spans
Daily traffic
39,500
2021 count
Owner
State
State Highway Agency

About this bridge

US501 over I85 US15 US70 is a steel continuous stringer/multi-beam or girder carrying US501 over I85 US15 US70 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 39,500 vehicles a day, roughly 12% of them trucks, projected to reach 79,000 by 2040. The structure is 343 ft (104.5 m) long and 54 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS501
CrossesI85 US15 US70
Location.21M. N. JCT SR1327
RouteU.S. Route 501
Coordinates36.0209, -78.90569
Functional classUrban Other Principal Arterial

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 inspectionAugust 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 rating82.9 US tons
Inventory rating49.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length343 ft (104.5 m)
Longest span109 ft (33.2 m)
Deck width54 ft (16.5 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,500 (2021)
Projected traffic79,000 by 2040
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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 US501 over I85 US15 US70 built?

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

What condition is US501 over I85 US15 US70 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 August 2023.

How much traffic does US501 over I85 US15 US70 carry?

About 39,500 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is US501 over I85 US15 US70?

The structure is 343 ft (104.5 m) long with a longest span of 109 ft (33.2 m) and a deck 54 ft wide.

Who owns US501 over I85 US15 US70?

It is owned by the State Highway Agency.