US Bridges

US15 US501 NC87 over Rocky River

Fair

Chatham County, North Carolina · 0.5 Mi. S. Jct. SR2218 · Structure no. 000000000370006

Built
1987
38 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
292 ft
5 main spans
Daily traffic
7,400
2022 count
Owner
State
State Highway Agency

About this bridge

US15 US501 NC87 over Rocky River is a prestressed concrete stringer/multi-beam or girder carrying US15 US501 NC87 over Rocky River in Chatham County, North Carolina. It was built in 1987, so it is 38 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 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 7,400 vehicles a day, roughly 8% of them trucks, projected to reach 14,800 by 2040. The structure is 292 ft (89 m) long and 39 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesUS15 US501 NC87
CrossesRocky River
Location0.5 Mi. S. Jct. SR2218
RouteU.S. Route 15
Coordinates35.62254, -79.18792
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.9 US tons
Inventory rating34.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length292 ft (89 m)
Longest span58 ft (17.6 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,400 (2022)
Projected traffic14,800 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US15 US501 NC87 over Rocky River built?

It was built in 1987, making it 38 years old in 2025.

What condition is US15 US501 NC87 over Rocky River 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 August 2024.

How much traffic does US15 US501 NC87 over Rocky River carry?

About 7,400 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is US15 US501 NC87 over Rocky River?

The structure is 292 ft (89 m) long with a longest span of 58 ft (17.6 m) and a deck 39 ft wide.

Who owns US15 US501 NC87 over Rocky River?

It is owned by the State Highway Agency.