US Bridges

SR1969 over Prong Stirrup Iron Crk

Fair

Durham County, North Carolina · 0.6 MI E JCT SR1959 · Structure no. 000000000630208

Built
1987
38 years old
Condition
Fair
inspected April 2023
Type
Culvert
Steel
Length
36 ft
3 main spans
Daily traffic
6,600
2017 count
Owner
State
State Highway Agency

About this bridge

SR1969 over Prong Stirrup Iron Crk is a steel culvert carrying SR1969 over Prong Stirrup Iron Crk in Durham 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 6,600 vehicles a day, roughly 7% of them trucks, projected to reach 13,200 by 2040. The structure is 36 ft (10.9 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSR1969
CrossesProng Stirrup Iron Crk
Location0.6 MI E JCT SR1959
RouteState Highway 1969
CountyDurham County
StateNorth Carolina
Coordinates35.89647, -78.83857
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length36 ft (10.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,600 (2017)
Projected traffic13,200 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 SR1969 over Prong Stirrup Iron Crk built?

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

What condition is SR1969 over Prong Stirrup Iron Crk 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 April 2023.

How much traffic does SR1969 over Prong Stirrup Iron Crk carry?

About 6,600 vehicles per day (2017 count), of which roughly 7% are trucks.

How long is SR1969 over Prong Stirrup Iron Crk?

The structure is 36 ft (10.9 m) long with a longest span of 10 ft (3 m).

Who owns SR1969 over Prong Stirrup Iron Crk?

It is owned by the State Highway Agency.