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Irr Bia Rte 13 over Greasewood Creek

Glacier County, Montana · rated Good in the 2025 National Bridge Inventory

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

Irr Bia Rte 13 over Greasewood Creek in Glacier County, Montana, 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 1984, making it 41 years old at the 2025 inventory.
It carries about 60 vehicles a day (traffic count year 2023).
It is one of 28 of the 71 inventoried bridges in Glacier County rated good (39.4%); 3 (4.2%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 77 ft
Location	6.4KM N of Blackfeet Schl
NBI structure number	00000000000C132
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Irr - US 2 over RR	1997	3,716	Good
Irr - US 2 over Cut Bank Creek	2007	3,523	Fair
Irr - US 2 over RR	1997	2,515	Good
Irr - US 89 over St Marys River	1956	2,355	Fair
Going-to-the-sun R over St. Mary River	1934	2,300	Fair
Going-to-the-sun R over Divide Creek	1934	2,300	Fair