HWY BOX MILL RD
Carrying HWY BOX MILL RD over WATER ELIZABETH BROOK
60M N OF BRKSD AVE, Middlesex, Massachusetts
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
HWY BOX MILL RD in Middlesex, Massachusetts sits above 80% of rated Massachusetts bridges on inventory load rating (50 t), while its 1900 build year is earlier than 90% of Middlesex's recorded-year cohort (818 bridges).
HWY BOX MILL RD in Middlesex, Massachusetts is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1900, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 3. The lowest applicable rating sets the federal condition category, so this Poor 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:S29011265MUNNBI
PRE-1950 · CONCRETE · LONG-SPAN-RUN · SUB-LED · TRACE-ADT · HEAVY-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- LONG-SPAN-RUN 4 spans
- SUB-LED Substructure-led
- TRACE-ADT Trace ADT
- HEAVY-LOAD Heavy load
- CAT-POOR Poor
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 BOX MILL RD
The HWY BOX MILL RD bridge in Middlesex, Massachusetts carries HWY BOX MILL RD over WATER ELIZABETH BROOK. It was built in 1900, making it 126 years old today. It was last reconstructed in 1966, extending its service life. The structure is built primarily of concrete and spans 4 sections, stretching 14.3 meters (47 feet) end to end. Daily traffic averages 10 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 4/9, superstructure at 4/9, substructure at 3/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules.
How HWY BOX MILL RD compares
Age against the county: built in 1900, earlier than 738 of Middlesex's 818 bridges with a recorded construction year (90%), against a county median build year of 1960. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Massachusetts bridges with a recorded inventory load rating (5,295 rated).
HWY BOX MILL RD vs every rated Massachusetts bridge
Inventory load rating (metric tons), FHWA NBI, this state
50 Top 20% higher than 80% 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.
Middlesex inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 818 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
- 1900
- Last Reconstructed
- 1966
- Material
- Concrete
- Number of Spans
- 4
- Structure Length
- 14.3 m (47 ft)
- Deck Width
- 6.3 m (21 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 10 vehicles/day
- Structure Number
- S29011265MUNNBI
Condition Analysis
- • At 4/9, the deck (driving surface) is in poor shape, with advanced wear on file for this vintage.
- • The superstructure (beams and supports above the deck) rates poor at 4/9, with advanced deterioration recorded on the latest inspection.
- • The substructure (piers and abutments) rates poor at 3/9, with advanced deterioration recorded on the latest inspection.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
HWY BOX MILL RD is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare HWY BOX MILL RD against other structures in Middlesex 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 BOX MILL RD?
HWY BOX MILL RD in Middlesex, Massachusetts has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 3/9 on the FHWA's 0–9 scale.
How often is HWY BOX MILL RD inspected?
HWY BOX MILL RD'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 10 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. HWY BOX MILL RD is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for HWY BOX MILL RD?
HWY BOX MILL RD has an NBI inventory load rating of 49.5 metric tons.
Who is responsible for maintaining HWY BOX MILL RD?
HWY BOX MILL RD is owned and maintained by Town/Township Highway Agency.
How old is HWY BOX MILL RD and does age affect safety?
HWY BOX MILL RD was built in 1900, making it 126 years old and last reconstructed in 1966.
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.