US Bridges

County Highway over Charlie Bob Creek

Fair

McKenzie County, North Dakota · 7E 1N of Grassy Butte · Structure no. 000000027145520

Built
1985
40 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
77
2022 count
Owner
County
County Highway Agency

About this bridge

County Highway over Charlie Bob Creek is a prestressed concrete tee beam carrying County Highway over Charlie Bob Creek in McKenzie County, North Dakota. It was built in 1985, so it is 40 years old, younger 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 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 77 vehicles a day, roughly 12% of them trucks, projected to reach 104 by 2042. The structure is 42 ft (12.8 m) long and 30 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesCounty Highway
CrossesCharlie Bob Creek
Location7E 1N of Grassy Butte
RouteCounty Highway 0
Coordinates47.39379, -103.1076
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating33.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77 (2022)
Projected traffic104 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Highway over Charlie Bob Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is County Highway over Charlie Bob 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 November 2023.

How much traffic does County Highway over Charlie Bob Creek carry?

About 77 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is County Highway over Charlie Bob Creek?

The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns County Highway over Charlie Bob Creek?

It is owned by the County Highway Agency.