US Bridges

65th Ave over Big Muddy Creek

Fair

Morton County, North Dakota · 1 North of Glen Ullin · Structure no. 000000030113110

Built
1962
63 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
350
2018 count
Owner
County
County Highway Agency

About this bridge

65th Ave over Big Muddy Creek is a prestressed concrete box beam or girders - multiple carrying 65th Ave over Big Muddy Creek in Morton County, North Dakota. It was built in 1962, so it is 63 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 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 350 vehicles a day, roughly 10% of them trucks, projected to reach 450 by 2038. The structure is 41 ft (12.5 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries65th Ave
CrossesBig Muddy Creek
Location1 North of Glen Ullin
RouteCounty Highway 3013
Coordinates46.82331, -101.82357
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating23.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadH 15
Structure length41 ft (12.5 m)
Longest span38 ft (11.6 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2018)
Projected traffic450 by 2038
Trucks10%
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 65th Ave over Big Muddy Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is 65th Ave over Big Muddy 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 September 2024.

How much traffic does 65th Ave over Big Muddy Creek carry?

About 350 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is 65th Ave over Big Muddy Creek?

The structure is 41 ft (12.5 m) long with a longest span of 38 ft (11.6 m) and a deck 30 ft wide.

Who owns 65th Ave over Big Muddy Creek?

It is owned by the County Highway Agency.