ST145 SARATOGA ST
Carrying ST145 SARATOGA ST over WATER BELLE ISLE INLET
AT WINTHROP TOWN LINE, Suffolk, Massachusetts
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: ST145 SARATOGA ST
The ST145 SARATOGA ST bridge in Suffolk, Massachusetts carries ST145 SARATOGA ST over WATER BELLE ISLE INLET. It was built in 2013, making it 13 years old today. The structure is built primarily of prestressed concrete continuous and spans 5 sections, stretching 62.2 meters (204 feet) end to end. Daily traffic averages 34,138 vehicles, placing it in the heavily-trafficked tier of Massachusetts bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 61.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How ST145 SARATOGA 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 How the historical reference is calculated.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
- 2013
- Material
- Prestressed Concrete Continuous
- Number of Spans
- 5
- Structure Length
- 62.2 m (204 ft)
- Deck Width
- 18.4 m (60 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 34,138 vehicles/day
- Structure Number
- B16004B5JMUNNBI
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether ST145 SARATOGA 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 ST145 SARATOGA 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 ST145 SARATOGA ST?
ST145 SARATOGA ST in Suffolk, Massachusetts has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is ST145 SARATOGA ST inspected?
ST145 SARATOGA 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 34,138 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ST145 SARATOGA ST is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for ST145 SARATOGA ST?
ST145 SARATOGA ST has an NBI inventory load rating of 61.8 metric tons.
Who is responsible for maintaining ST145 SARATOGA ST?
ST145 SARATOGA ST is owned and maintained by City/Municipal Highway Agency.
How old is ST145 SARATOGA ST and does age affect safety?
ST145 SARATOGA ST was built in 2013, making it 13 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.
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.