US Bridges

US15/501N.RMP over US15/US501BUS

Good

Durham County, North Carolina · 0.43 MI.N.JCT.SR1209 · Structure no. 000000000630048

Built
1981
44 years old, rebuilt 1999
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
309 ft
4 main spans
Daily traffic
16,500
2021 count
Owner
State
State Highway Agency

About this bridge

US15/501N.RMP over US15/US501BUS is a steel stringer/multi-beam or girder carrying US15/501N.RMP over US15/US501BUS in Durham County, North Carolina. It was built in 1981 and reconstructed in 1999, so it is 44 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 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 16,500 vehicles a day, roughly 12% of them trucks, projected to reach 33,000 by 2040. The structure is 309 ft (94.1 m) long and 109 ft wide.

Location

Open in Google Maps
CarriesUS15/501N.RMP
CrossesUS15/US501BUS
Location0.43 MI.N.JCT.SR1209
RouteU.S. Route 15
CountyDurham County
StateNorth Carolina
Coordinates35.96826, -78.96255
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating61 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length309 ft (94.1 m)
Longest span123 ft (37.4 m)
Deck width109 ft (33.1 m)
Roadway width99 ft (30.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,500 (2021)
Projected traffic33,000 by 2040
Trucks12%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 US15/501N.RMP over US15/US501BUS built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 1999.

What condition is US15/501N.RMP over US15/US501BUS 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 December 2023.

How much traffic does US15/501N.RMP over US15/US501BUS carry?

About 16,500 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is US15/501N.RMP over US15/US501BUS?

The structure is 309 ft (94.1 m) long with a longest span of 123 ft (37.4 m) and a deck 109 ft wide.

Who owns US15/501N.RMP over US15/US501BUS?

It is owned by the State Highway Agency.