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Bia Rte 1531 over Mattamiscontis Stream

Penobscot County, Maine · rated Poor in the 2025 National Bridge Inventory

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

Bia Rte 1531 over Mattamiscontis Stream in Penobscot County, Maine, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 2004, making it 21 years old at the 2025 inventory.
It carries about 15 vehicles a day (traffic count year 2024).
It is one of 60 of the 317 inventoried bridges in Penobscot County rated poor (18.9%); 60 (18.9%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Steel stringer or multi-beam girder
Length	about 39 ft
Location	4.15 Km NW of I-95 Interc
NBI structure number	0000S50018B0041
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
I 95 over Route 15 (broadway)	1960	25,340	Poor
I 95 over Kenduskeag Str&valley Av	1960	25,340	Fair
I 95 SB over Stillwater Avenue	1960	25,150	Poor
I 95 NB over Stillwater Avenue	1960	25,120	Poor
Penob River Br over Penobscot R & RR Yard	1997	24,636	Fair
I 95 SB over Industrial Spur (I-395)	1960	23,160	Fair