Hwy Boston St over Tr Amtrak & Red Line

Suffolk County, Massachusetts · rated Poor in the 2025 National Bridge Inventory

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

• Hwy Boston St over Tr Amtrak & Red Line in Suffolk County, Massachusetts, 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 1977, making it 48 years old at the 2025 inventory.
• It carries about 15,300 vehicles a day (traffic count year 2012).
• It is one of 49 of the 490 inventoried bridges in Suffolk County rated poor (10.0%); 49 (10.0%) 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.

View this bridge on a map → (42.3277, -71.05815)

Component ratings

Bridge details

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

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Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.