ST106 PLYMOUTH ST
Carrying ST106 PLYMOUTH ST over WATER SATUCKET RIVER
.5 M E OF RTE 18, Plymouth, Massachusetts
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: ST106 PLYMOUTH ST
The ST106 PLYMOUTH ST bridge in Plymouth, Massachusetts carries ST106 PLYMOUTH ST over WATER SATUCKET RIVER. It was built in 1971, making it 55 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 11.0 meters (36 feet) end to end. Daily traffic averages 11,700 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 culvert 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 27.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How ST106 PLYMOUTH 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 How the historical reference is calculated.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
- 1971
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 11.0 m (36 ft)
- Deck Width
- 25.6 m (84 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 11,700 vehicles/day
- Structure Number
- E0101249MDOTNBI
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether ST106 PLYMOUTH 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 ST106 PLYMOUTH ST against other structures in Plymouth 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 ST106 PLYMOUTH ST?
ST106 PLYMOUTH ST in Plymouth, Massachusetts on the FHWA's 0–9 scale.
How often is ST106 PLYMOUTH ST inspected?
ST106 PLYMOUTH 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 11,700 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ST106 PLYMOUTH 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 ST106 PLYMOUTH ST?
ST106 PLYMOUTH ST has an NBI inventory load rating of 27.7 metric tons.
Who is responsible for maintaining ST106 PLYMOUTH ST?
ST106 PLYMOUTH ST is owned and maintained by State Highway Agency.
How old is ST106 PLYMOUTH ST and does age affect safety?
ST106 PLYMOUTH ST was built in 1971, making it 55 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.