FHWA NBI 2024 Inspection record Public-domain dataset

HWY CANTERBRY ST

Carrying HWY CANTERBRY ST over RR AMTRAK/MBTA

2.3 KM NW OFJCTSR28&SR138, Suffolk, Massachusetts

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
8 t Inventory load rating

Bridge Snapshot: HWY CANTERBRY ST

The HWY CANTERBRY ST bridge in Suffolk, Massachusetts carries HWY CANTERBRY ST over RR AMTRAK/MBTA. It was built in 1985, making it 41 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 21.6 meters (71 feet) end to end. Daily traffic averages 16,034 vehicles, placing it in the heavily-trafficked tier of Massachusetts bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show a deck rating of 4/9, superstructure at 4/9, substructure at 6/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 7.8 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How HWY CANTERBRY ST compares

▼ 33.4
Load rating vs Massachusetts average (41.2 t)
Bottom 1%
Lower load rating than 99% of Massachusetts bridges
494
Bridges in Suffolk · 34 in Poor condition
HWY CANTERBRY ST 7.8 t
Massachusetts average 41.2 t

Live comparison across Massachusetts.

Historical Sufficiency Rating

PlainBridge-computed
24.5 / 100 - historical 20–49.9 band
Structural adequacy /55
0.0
Serviceability /30
17.0
Essentiality /15
7.5
Special reductions
0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Deck
4/9
Poor (1–4)
Superstructure
4/9
Poor (1–4)
Substructure
6/9
Fair (5–6)
Inventory Load Rating
7.8 t
NBI inventory level (metric tons)
Overall Condition
Poor

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1985
Material
Prestressed Concrete
Number of Spans
1
Structure Length
21.6 m (71 ft)
Deck Width
14.9 m (49 ft)
Owner
State Highway Agency
Avg Daily Traffic
16,034 vehicles/day
Structure Number
B161073HADOT634

Condition Analysis

  • At 4/9, the deck (driving surface) is in poor shape, with advanced wear flagged for priority repair.
  • The superstructure (beams and supports above the deck) rates poor at 4/9, advanced deterioration that should be prioritized for repair.
  • At 6/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.

How to read this record

HWY CANTERBRY ST is in the federal Poor condition category. That is a component-based result, not a closure order.

  • NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
  • Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
  • Compare HWY CANTERBRY 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 CANTERBRY ST?

HWY CANTERBRY ST in Suffolk, Massachusetts has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.

How often is HWY CANTERBRY ST inspected?

HWY CANTERBRY 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 16,034 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. HWY CANTERBRY ST is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for HWY CANTERBRY ST?

HWY CANTERBRY ST has an NBI inventory load rating of 7.8 metric tons.

Who is responsible for maintaining HWY CANTERBRY ST?

HWY CANTERBRY ST is owned and maintained by State Highway Agency.

How old is HWY CANTERBRY ST and does age affect safety?

HWY CANTERBRY ST was built in 1985, making it 41 years old.

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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

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.