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20th Ave SE over S Branch Beaver Creek

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

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

20th Ave SE over S Branch Beaver Creek in Emmons 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 substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1968, making it 57 years old at the 2025 inventory.
It carries about 52 vehicles a day (traffic count year 2019).
Its listed owner is the county highway agency.
It is one of 22 of the 68 inventoried bridges in Emmons County rated fair (32.4%); 2 (2.9%) 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	Prestressed concrete multiple box beam
Length	about 55 ft
Location	9 East 3 North Strasburg
NBI structure number	000000015131330
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US Highway 83 over Creek	1945	2,850	Fair
US Highway 83 over Beaver Creek	1941	2,340	Good
US Highway 83 over Beaver Creek	1961	2,300	Good
US Highway 83 over Creek	2013	2,220	Good
US Highway 83 over Creek	1941	1,970	Good
US Highway 83 over Creek	2012	1,845	Good