Home › Montana › Lake County › Mcdonald Lake Rd over Post Creek 078

Mcdonald Lake Rd over Post Creek 078

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

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

Mcdonald Lake Rd over Post Creek 078 in Lake 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 2015, making it 10 years old at the 2025 inventory.
It carries about 100 vehicles a day (traffic count year 2025).
Its listed owner is the county highway agency.
It is one of 70 of the 116 inventoried bridges in Lake County rated good (60.3%); 13 (11.2%) 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	Steel stringer or multi-beam girder
Length	about 40 ft
Location	6M N St Ignatius
NBI structure number	L24352001+01001
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 93 over Pablo Feeder Canal	2006	15,997	Good
US 93 over Wildlife Crossing	2007	10,897	Good
US 93 over Wildlife Crossing	2007	10,897	Good
US 93 over Agricultural Crossing	2007	10,897	Good
Irr - US 93 over Jocko River	2005	8,775	Good
US 93 over Spring Creek	2006	8,775	Good