HWY FOREST ST
Carrying HWY FOREST ST over WATER TOWN RIVER
1.05M FROM RIVER ST, Plymouth, Massachusetts
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
HWY FOREST ST in Plymouth, Massachusetts sits above 14% of rated Massachusetts bridges on inventory load rating (26 t), while its 1978 build year is earlier than 30% of Plymouth's recorded-year cohort (287 bridges).
HWY FOREST ST in Plymouth, Massachusetts is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1978, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure MA:W1800644TMUNNBI
INTERSTATE-ERA · TIMBER · SINGLE-SPAN · TIED-CTRL · LOCAL-ADT · STANDARD-LOAD · CAT-GOOD
- INTERSTATE-ERA 1950–1979
- TIMBER Wood or timber
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard load
- CAT-GOOD Good
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: HWY FOREST ST
The HWY FOREST ST bridge in Plymouth, Massachusetts carries HWY FOREST ST over WATER TOWN RIVER. It was built in 1978, making it 48 years old today. The structure is built primarily of wood or timber and spans 1 section, stretching 12.8 meters (42 feet) end to end. Daily traffic averages 100 vehicles, placing it in the lower-traffic tier of Massachusetts bridges. It is owned and maintained by Town/Township 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.
How HWY FOREST ST compares
Age against the county: built in 1978, earlier than 85 of Plymouth's 287 bridges with a recorded construction year (30%), against a county median build year of 1962. This is one of the newer structures in its county.
Live comparison across Massachusetts bridges with a recorded inventory load rating (5,295 rated).
HWY FOREST ST vs every rated Massachusetts bridge
Inventory load rating (metric tons), FHWA NBI, this state
26 Top 86% higher than 14% of 5,295 bridges
rated Massachusetts bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Plymouth inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 287 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1978
- Material
- Wood or Timber
- Number of Spans
- 1
- Structure Length
- 12.8 m (42 ft)
- Deck Width
- 5.6 m (18 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 100 vehicles/day
- Structure Number
- W1800644TMUNNBI
Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
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 HWY FOREST 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 HWY FOREST 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 HWY FOREST ST?
HWY FOREST 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 HWY FOREST ST inspected?
HWY FOREST 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 100 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. HWY FOREST 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 HWY FOREST ST?
HWY FOREST ST has an NBI inventory load rating of 25.8 metric tons.
Who is responsible for maintaining HWY FOREST ST?
HWY FOREST ST is owned and maintained by Town/Township Highway Agency.
How old is HWY FOREST ST and does age affect safety?
HWY FOREST ST was built in 1978, making it 48 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.