FHWA NBI 2024 Inspection record Public-domain dataset

HWY MAPLE SPRING

Carrying HWY MAPLE SPRING over ST 25

1.5 M E OF CHARGE PND RD, Plymouth, Massachusetts

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
37 t Inventory load rating

Bridge Snapshot: HWY MAPLE SPRING

The HWY MAPLE SPRING bridge in Plymouth, Massachusetts carries HWY MAPLE SPRING over ST 25. It was built in 1980, making it 46 years old today. The structure is built primarily of steel and spans 2 sections, stretching 73.2 meters (240 feet) end to end. Daily traffic averages 9,100 vehicles, placing it in the moderately-trafficked tier of Massachusetts bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show a deck rating of 6/9, superstructure at 5/9, substructure at 5/9. 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 37.3 metric tons.

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

How HWY MAPLE SPRING compares

▼ 3.9
Load rating vs Massachusetts average (41.2 t)
Top 49%
Higher load rating than 51% of Massachusetts bridges
287
Bridges in Plymouth · 16 in Poor condition
HWY MAPLE SPRING 37.3 t
Massachusetts average 41.2 t

Live comparison across Massachusetts.

Historical Sufficiency Rating

PlainBridge-computed
78.2 / 100 - historical 50–79.9 band
Structural adequacy /55
45.0
Serviceability /30
29.0
Essentiality /15
7.2
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 How the historical reference is calculated.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

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

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

Structural Details

Year Built
1980
Material
Steel
Number of Spans
2
Structure Length
73.2 m (240 ft)
Deck Width
17.5 m (57 ft)
Owner
State Highway Agency
Avg Daily Traffic
9,100 vehicles/day
Structure Number
W060374AJDOTNBI

Condition Analysis

  • The deck (driving surface) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
  • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
  • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.

How to read this record

This page shows what the last federal inspection recorded, not whether HWY MAPLE SPRING 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 MAPLE SPRING 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 MAPLE SPRING?

HWY MAPLE SPRING in Plymouth, Massachusetts has a deck rating of 6/9, superstructure rating of 5/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.

How often is HWY MAPLE SPRING inspected?

HWY MAPLE SPRING'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 9,100 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. HWY MAPLE SPRING 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 MAPLE SPRING?

HWY MAPLE SPRING has an NBI inventory load rating of 37.3 metric tons.

Who is responsible for maintaining HWY MAPLE SPRING?

HWY MAPLE SPRING is owned and maintained by State Highway Agency.

How old is HWY MAPLE SPRING and does age affect safety?

HWY MAPLE SPRING was built in 1980, making it 46 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.