US Bridges

CR138 over Big Muddy Creek

Good

Morton County, North Dakota · 5 West 3 North of Almont · Structure no. 000000030124140

Built
1988
37 years old
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
112 ft
2 main spans
Daily traffic
75
2018 count
Owner
County
County Highway Agency

About this bridge

CR138 over Big Muddy Creek is a prestressed concrete continuous box beam or girders - single or spread carrying CR138 over Big Muddy Creek in Morton County, North Dakota. It was built in 1988, so it is 37 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 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 75 vehicles a day, projected to reach 60 by 2038. The structure is 112 ft (34.1 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCR138
CrossesBig Muddy Creek
Location5 West 3 North of Almont
RouteCounty Highway 3020
Coordinates46.77531, -101.60372
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.8 US tons
Inventory rating19.8 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length112 ft (34.1 m)
Longest span53 ft (16.2 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2018)
Projected traffic60 by 2038
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 CR138 over Big Muddy Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is CR138 over Big Muddy 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 November 2024.

How much traffic does CR138 over Big Muddy Creek carry?

About 75 vehicles per day (2018 count).

How long is CR138 over Big Muddy Creek?

The structure is 112 ft (34.1 m) long with a longest span of 53 ft (16.2 m) and a deck 31 ft wide.

Who owns CR138 over Big Muddy Creek?

It is owned by the County Highway Agency.