US Bridges

SR1321 over Ellerbee Creek

Good

Durham County, North Carolina · 0.35 MI.S.JCT.I85 · Structure no. 000000000630245

Built
1940
85 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
26 ft
1 main span
Daily traffic
17,500
2021 count
Owner
State
State Highway Agency

About this bridge

SR1321 over Ellerbee Creek is a concrete culvert carrying SR1321 over Ellerbee Creek in Durham County, North Carolina. It was built in 1940, so it is 85 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 17,500 vehicles a day, roughly 6% of them trucks, projected to reach 35,000 by 2040. The structure is 26 ft (7.9 m) long and 43 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR1321
CrossesEllerbee Creek
Location0.35 MI.S.JCT.I85
RouteState Highway 1321
Coordinates36.02209, -78.93609
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.9 US tons
Inventory rating29 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,500 (2021)
Projected traffic35,000 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 SR1321 over Ellerbee Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is SR1321 over Ellerbee Creek 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 July 2023.

How much traffic does SR1321 over Ellerbee Creek carry?

About 17,500 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1321 over Ellerbee Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 43 ft wide.

Who owns SR1321 over Ellerbee Creek?

It is owned by the State Highway Agency.