US Bridges

Nd Highway over Chanta Peta Creek

Good

Morton County, North Dakota · 4 East of Flasher · Structure no. 0021110468

Built
1954
71 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
100 ft
2 main spans
Daily traffic
860
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway over Chanta Peta Creek is a steel continuous stringer/multi-beam or girder carrying Nd Highway over Chanta Peta Creek in Morton County, North Dakota. It was built in 1954, so it is 71 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 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 860 vehicles a day, roughly 12% of them trucks, projected to reach 830 by 2039. The structure is 100 ft (30.5 m) long and 33 ft wide. If it were closed, the detour would be 55.9 mi (90 km).

CarriesNd Highway
CrossesChanta Peta Creek
Location4 East of Flasher
RouteState Highway 21
Coordinates46.45833, -101.16333
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.6 US tons
Inventory rating36.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length100 ft (30.5 m)
Longest span48 ft (14.6 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic860 (2019)
Projected traffic830 by 2039
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.9 mi (90 km)
TollOn a free road
National Highway SystemYes

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 Nd Highway over Chanta Peta Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Nd Highway over Chanta Peta 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 May 2023.

How much traffic does Nd Highway over Chanta Peta Creek carry?

About 860 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is Nd Highway over Chanta Peta Creek?

The structure is 100 ft (30.5 m) long with a longest span of 48 ft (14.6 m) and a deck 33 ft wide.

Who owns Nd Highway over Chanta Peta Creek?

It is owned by the State Highway Agency.