HWY MYRTLE ST
Carrying HWY MYRTLE ST over WATER CHARLES RIVER
.3 MI. W. OF PLEASANT ST., Norfolk, Massachusetts
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
HWY MYRTLE ST in Norfolk, Massachusetts sits above 84% of rated Massachusetts bridges on inventory load rating (52 t), while its 1996 build year is earlier than 16% of Norfolk's recorded-year cohort (343 bridges).
HWY MYRTLE ST in Norfolk, Massachusetts is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1996, 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:M23007ADLMUNNBI
LATE-CENTURY · PRESTRESS · SINGLE-SPAN · TIED-CTRL · ARTERIAL-ADT · HEAVY-LOAD · CAT-GOOD
- LATE-CENTURY 1980–1999
- PRESTRESS Prestressed concrete
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- ARTERIAL-ADT Arterial ADT
- HEAVY-LOAD Heavy 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 MYRTLE ST
The HWY MYRTLE ST bridge in Norfolk, Massachusetts carries HWY MYRTLE ST over WATER CHARLES RIVER. It was built in 1996, making it 30 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 22.1 meters (73 feet) end to end. Daily traffic averages 1,850 vehicles, placing it in the moderately-trafficked 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 8/9, substructure at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range.
How HWY MYRTLE ST compares
Age against the county: built in 1996, earlier than 55 of Norfolk's 343 bridges with a recorded construction year (16%), against a county median build year of 1963. 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 MYRTLE ST vs every rated Massachusetts bridge
Inventory load rating (metric tons), FHWA NBI, this state
52 Top 16% higher than 84% 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.
Norfolk inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 343 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
- 1996
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 22.1 m (73 ft)
- Deck Width
- 9.7 m (32 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 1,850 vehicles/day
- Structure Number
- M23007ADLMUNNBI
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 8/9, with no significant deterioration on file.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
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 MYRTLE 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 MYRTLE ST against other structures in Norfolk 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 MYRTLE ST?
HWY MYRTLE ST in Norfolk, Massachusetts has a deck rating of 7/9, superstructure rating of 8/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is HWY MYRTLE ST inspected?
HWY MYRTLE 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 1,850 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. HWY MYRTLE 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 MYRTLE ST?
HWY MYRTLE ST has an NBI inventory load rating of 52.2 metric tons.
Who is responsible for maintaining HWY MYRTLE ST?
HWY MYRTLE ST is owned and maintained by Town/Township Highway Agency.
How old is HWY MYRTLE ST and does age affect safety?
HWY MYRTLE ST was built in 1996, making it 30 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.