US Bridges

West Knox Street over S.Ellerbee Crk.Tributary

Fair

Durham County, North Carolina · .05 Mi. E. Jct. Ruffin ST · Structure no. 000000000630585

Built
1940
85 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
1,600
2007 count
Owner
City
City or Municipal Highway Agency

About this bridge

West Knox Street over S.Ellerbee Crk.Tributary is a concrete continuous culvert carrying West Knox Street over S.Ellerbee Crk.Tributary 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 fair condition with a lowest component rating of 5 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 1,600 vehicles a day, roughly 7% of them trucks, projected to reach 3,200 by 2040. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesWest Knox Street
CrossesS.Ellerbee Crk.Tributary
Location.05 Mi. E. Jct. Ruffin ST
RouteCity Street 0
CountyDurham County
StateNorth Carolina
Coordinates36.01289, -78.90175
Functional classUrban Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2007)
Projected traffic3,200 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 West Knox Street over S.Ellerbee Crk.Tributary built?

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

What condition is West Knox Street over S.Ellerbee Crk.Tributary 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 2024.

How much traffic does West Knox Street over S.Ellerbee Crk.Tributary carry?

About 1,600 vehicles per day (2007 count), of which roughly 7% are trucks.

How long is West Knox Street over S.Ellerbee Crk.Tributary?

The structure is 26 ft (7.9 m) long with a longest span of 13 ft (3.9 m).

Who owns West Knox Street over S.Ellerbee Crk.Tributary?

It is owned by the City or Municipal Highway Agency.