ST123 CENTER ST
Carrying ST123 CENTER ST over WATER TROUT BROOK
AT JCT PLYMOUTH ST, Plymouth, Massachusetts
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: ST123 CENTER ST
The ST123 CENTER ST bridge in Plymouth, Massachusetts carries ST123 CENTER ST over WATER TROUT BROOK. It was built in 1901, making it 125 years old today. It was last reconstructed in 1993, extending its service life. The structure is built primarily of prestressed concrete and spans 1 section, stretching 7.6 meters (25 feet) end to end. Daily traffic averages 14,224 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 45.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How ST123 CENTER 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 How the historical reference is calculated.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
- 1901
- Last Reconstructed
- 1993
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 7.6 m (25 ft)
- Deck Width
- 15.8 m (52 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 14,224 vehicles/day
- Structure Number
- B2503742RMUNNBI
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • 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 ST123 CENTER 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 ST123 CENTER 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 ST123 CENTER ST?
ST123 CENTER ST in Plymouth, 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 ST123 CENTER ST inspected?
ST123 CENTER 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 14,224 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ST123 CENTER 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 ST123 CENTER ST?
ST123 CENTER ST has an NBI inventory load rating of 45.7 metric tons.
Who is responsible for maintaining ST123 CENTER ST?
ST123 CENTER ST is owned and maintained by City/Municipal Highway Agency.
How old is ST123 CENTER ST and does age affect safety?
ST123 CENTER ST was built in 1901, making it 125 years old and last reconstructed in 1993.
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.