US Bridges

Interstate 29 over Pitcairn Creek

Fair

Richland County, North Dakota · 12 North of Nd 13 · Structure no. 0029034359 L

Built
1973
52 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
2,600
2019 count
Owner
State
State Highway Agency

About this bridge

Interstate 29 over Pitcairn Creek is a prestressed concrete box beam or girders - single or spread carrying Interstate 29 over Pitcairn Creek in Richland County, North Dakota. It was built in 1973, so it is 52 years old, older than the North Dakota average of 48.2 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 2,600 vehicles a day, roughly 22% of them trucks, projected to reach 2,600 by 2039. The structure is 70 ft (21.3 m) long and 45 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesInterstate 29
CrossesPitcairn Creek
Location12 North of Nd 13
RouteInterstate 29
CountyRichland County
StateNorth Dakota
Coordinates46.43207, -96.83026
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
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
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.6 US tons
Inventory rating54 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span70 ft (21.3 m)
Deck width45 ft (13.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2019)
Projected traffic2,600 by 2039
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Interstate 29 over Pitcairn Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Interstate 29 over Pitcairn 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 May 2023.

How much traffic does Interstate 29 over Pitcairn Creek carry?

About 2,600 vehicles per day (2019 count), of which roughly 22% are trucks.

How long is Interstate 29 over Pitcairn Creek?

The structure is 70 ft (21.3 m) long with a longest span of 70 ft (21.3 m) and a deck 45 ft wide.

Who owns Interstate 29 over Pitcairn Creek?

It is owned by the State Highway Agency.