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42 1/2 St over Big Muddy Creek

Morton County, North Dakota · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

42 1/2 St over Big Muddy Creek in Morton County, North Dakota, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1955 and reconstructed in 1993, making it 70 years old at the 2025 inventory.
It carries about 5 vehicles a day (traffic count year 2018).
Its listed owner is the county highway agency.
It is one of 128 of the 269 inventoried bridges in Morton County rated fair (47.6%); 26 (9.7%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 56 ft
Location	9 East 2 South Glen Ullin
NBI structure number	000000030123130
Condition class	Fair

Source: FHWA National Bridge Inventory, 2025 data as reported by the North Dakota department of transportation.

Bridge	Built	Vehicles/day	Condition
Interstate 94 over Missouri River	1965	24,125	Fair
Interstate 194 over Business Loop 94	1981	18,200	Fair
I-94 Business Loop over West Midway Separation	1965	16,750	Fair
Interstate 94 over East Midway Interchange	1965	9,100	Fair
Interstate 194 over Business 94	1981	9,100	Fair
Interstate 194 over Business 94	1981	9,100	Fair