FHWA NBI 2024 Inspection record Public-domain dataset

HWY CIRCUIT DR

Carrying HWY CIRCUIT DR over WATER SCARBOROUGH POND

4.8 KM W OF RT 93, Suffolk, Massachusetts

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
23 t Inventory load rating

Bridge Snapshot: HWY CIRCUIT DR

The HWY CIRCUIT DR bridge in Suffolk, Massachusetts carries HWY CIRCUIT DR over WATER SCARBOROUGH POND. It was built in 1892, making it 134 years old today. The structure is built primarily of masonry and spans 1 section, stretching 9.4 meters (31 feet) end to end. Daily traffic averages 130 vehicles, placing it in the lower-traffic tier of Massachusetts bridges. It is owned and maintained by City/Municipal Highway Agency.

The latest FHWA inspection records show superstructure at 6/9, substructure at 7/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 22.8 metric tons.

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

How HWY CIRCUIT DR compares

▼ 18.4
Load rating vs Massachusetts average (41.2 t)
Bottom 9%
Lower load rating than 91% of Massachusetts bridges
494
Bridges in Suffolk · 34 in Poor condition
HWY CIRCUIT DR 22.8 t
Massachusetts average 41.2 t

Live comparison across Massachusetts.

Historical Sufficiency Rating

PlainBridge-computed
82.3 / 100 - historical 80–100 band
Structural adequacy /55
45.3
Serviceability /30
25.0
Essentiality /15
15.0
Special reductions
−3.0

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 How the historical reference is calculated.

Condition Ratings

Superstructure
6/9
Fair (5–6)
Substructure
7/9
Good (7–9)
Inventory Load Rating
22.8 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1892
Material
Masonry
Number of Spans
1
Structure Length
9.4 m (31 ft)
Deck Width
17.6 m (58 ft)
Owner
City/Municipal Highway Agency
Avg Daily Traffic
130 vehicles/day
Structure Number
B1645138YMUNNBI

Condition Analysis

  • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
  • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.

How to read this record

This page shows what the last federal inspection recorded, not whether HWY CIRCUIT DR 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 CIRCUIT DR 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 CIRCUIT DR?

HWY CIRCUIT DR in Suffolk, Massachusetts, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.

How often is HWY CIRCUIT DR inspected?

HWY CIRCUIT DR'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 130 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. HWY CIRCUIT DR 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 CIRCUIT DR?

HWY CIRCUIT DR has an NBI inventory load rating of 22.8 metric tons.

Who is responsible for maintaining HWY CIRCUIT DR?

HWY CIRCUIT DR is owned and maintained by City/Municipal Highway Agency.

How old is HWY CIRCUIT DR and does age affect safety?

HWY CIRCUIT DR was built in 1892, making it 134 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.