HWY ADAMS ST
Carrying HWY ADAMS ST over TR RED LINE MATT CONN
.3 MI S. JCT SR, Suffolk, Massachusetts
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: HWY ADAMS ST
The HWY ADAMS ST bridge in Suffolk, Massachusetts carries HWY ADAMS ST over TR RED LINE MATT CONN. It was built in 1886, making it 140 years old today. It was last reconstructed in 1989, extending its service life. The structure is built primarily of prestressed concrete and spans 1 section, stretching 17.8 meters (58 feet) end to end. Daily traffic averages 21,000 vehicles, placing it in the heavily-trafficked tier of Massachusetts bridges. It is owned and maintained by Other State Agencies.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 36.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How HWY ADAMS ST compares
Live comparison across Massachusetts.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1886
- Last Reconstructed
- 1989
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 17.8 m (58 ft)
- Deck Width
- 15.2 m (50 ft)
- Owner
- Other State Agencies
- Avg Daily Traffic
- 21,000 vehicles/day
- Structure Number
- B161454VPMBTNBI
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.
How to read this record
This page shows what the last federal inspection recorded, not whether HWY ADAMS ST is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare HWY ADAMS ST against other structures in Suffolk and across Massachusetts. Massachusetts bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for HWY ADAMS ST?
HWY ADAMS ST in Suffolk, Massachusetts has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is HWY ADAMS ST inspected?
HWY ADAMS ST's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 21,000 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. HWY ADAMS ST is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for HWY ADAMS ST?
HWY ADAMS ST has an NBI inventory load rating of 36.5 metric tons.
Who is responsible for maintaining HWY ADAMS ST?
HWY ADAMS ST is owned and maintained by Other State Agencies.
How old is HWY ADAMS ST and does age affect safety?
HWY ADAMS ST was built in 1886, making it 140 years old and last reconstructed in 1989.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.