I 93 SB/US1SB over St 37 Granite St

Norfolk County, Massachusetts · rated Fair in the 2025 National Bridge Inventory

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

• I 93 SB/US1SB over St 37 Granite St in Norfolk County, Massachusetts, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
• It was built in 1957, making it 68 years old at the 2025 inventory.
• It carries about 108,018 vehicles a day (traffic count year 2023).
• Its listed owner is the state highway agency.
• It is one of 239 of the 343 inventoried bridges in Norfolk County rated fair (69.7%); 21 (6.1%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• Its class is unchanged from 2024 (fair), but component ratings moved: superstructure 6 to 5.
• Its most recent inspection on record is dated June 2024, on a 24-month routine inspection cycle.
• A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

View this bridge on a map → (42.22308, -71.03109)

Component ratings

Bridge details

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

Busiest bridges in Norfolk County

All bridges nearby: Norfolk County, MA bridge conditions · every bridge in Norfolk County · Massachusetts bridges.

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