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Nd Highway 49 over Antelope Creek

Grant County, North Dakota · rated Good in the 2025 National Bridge Inventory

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

Nd Highway 49 over Antelope Creek in Grant County, North Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1988, making it 37 years old at the 2025 inventory.
It carries about 580 vehicles a day (traffic count year 2019).
Its listed owner is the state highway agency.
It is one of 23 of the 59 inventoried bridges in Grant County rated good (39.0%); 6 (10.2%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Continuous prestressed concrete single box beam
Length	about 102 ft
Location	6 North of Nd 21
NBI structure number	0049042060
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Nd Highway over Creek	1950	950	Fair
Nd Highway over Branch-antelope Creek	1952	700	Fair
Nd Highway 21 over Creek	1994	590	Fair
Nd Highway 31 over Dogtooth Creek	2024	420	Good
Nd Highway 49 over Cannonball River	1970	420	Fair
Nd Highway 49 over Creek	1970	380	Good