US Bridges

I85 & US15 over Ellerbee Creek

Fair

Durham County, North Carolina · 0.4 MI.N.JCT.SR1003 · Structure no. 000000000630333

Built
1960
65 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
42 ft
3 main spans
Daily traffic
104,000
2019 count
Owner
State
State Highway Agency

About this bridge

I85 & US15 over Ellerbee Creek is a concrete continuous culvert carrying I85 & US15 over Ellerbee Creek in Durham County, North Carolina. It was built in 1960, so it is 65 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 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 104,000 vehicles a day, roughly 16% of them trucks, projected to reach 208,000 by 2040. The structure is 42 ft (12.8 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI85 & US15
CrossesEllerbee Creek
Location0.4 MI.N.JCT.SR1003
RouteInterstate 85
Coordinates36.02675, -78.91887
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length42 ft (12.8 m)
Longest span14 ft (4.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic104,000 (2019)
Projected traffic208,000 by 2040
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I85 & US15 over Ellerbee Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is I85 & US15 over Ellerbee Creek 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 January 2025.

How much traffic does I85 & US15 over Ellerbee Creek carry?

About 104,000 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is I85 & US15 over Ellerbee Creek?

The structure is 42 ft (12.8 m) long with a longest span of 14 ft (4.2 m).

Who owns I85 & US15 over Ellerbee Creek?

It is owned by the State Highway Agency.