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Mountain Rd over Blackstone Brook

Piscataquis County, Maine · rated Good in the 2025 National Bridge Inventory

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

Mountain Rd over Blackstone Brook in Piscataquis County, Maine, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 9 (excellent condition) on the 0-9 scale.
It was built in 1945 and reconstructed in 2023, making it 80 years old at the 2025 inventory.
It carries about 10 vehicles a day (traffic count year 2016).
Its listed owner is the county highway agency.
It is one of 16 of the 80 inventoried bridges in Piscataquis County rated good (20.0%); 17 (21.2%) 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 41 ft
Location	1.2MI W Shrly/abbot Rd
NBI structure number	0940
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
E Main St over Piscataquis River	1912	10,496	Poor
W Main St over Sebec River	1931	6,037	Poor
Main St over Sebec River	1915	6,037	Poor
Main St over Sebec River	1915	6,037	Poor
W Main St over Sebec River	1924	6,037	Fair
S Main St over Piscataquis River	1954	5,955	Fair