HWY LWLL CN B-10
Carrying HWY LWLL CN B-10 over HWY LOWEL CON RAMP B8
RAMP B-10/RAMP B-8, Middlesex, Massachusetts
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: HWY LWLL CN B-10
The HWY LWLL CN B-10 bridge in Middlesex, Massachusetts carries HWY LWLL CN B-10 over HWY LOWEL CON RAMP B8. It was built in 1959, making it 67 years old today. The structure is built primarily of steel and spans 3 sections, stretching 36.9 meters (121 feet) end to end. Daily traffic averages 8,500 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 4/9, substructure at 4/9. 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. Its NBI inventory load rating is 33.3 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How HWY LWLL CN B-10 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 How the historical reference is calculated.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
- 1959
- Material
- Steel
- Number of Spans
- 3
- Structure Length
- 36.9 m (121 ft)
- Deck Width
- 13.4 m (44 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 8,500 vehicles/day
- Structure Number
- L150812H4DOTNBI
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
- • At 4/9, the substructure (piers and abutments) is in poor shape, with advanced wear flagged for priority repair.
How to read this record
HWY LWLL CN B-10 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 LWLL CN B-10 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 LWLL CN B-10?
HWY LWLL CN B-10 in Middlesex, Massachusetts has a deck rating of 6/9, superstructure rating of 4/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is HWY LWLL CN B-10 inspected?
HWY LWLL CN B-10'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 8,500 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. HWY LWLL CN B-10 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 LWLL CN B-10?
HWY LWLL CN B-10 has an NBI inventory load rating of 33.3 metric tons.
Who is responsible for maintaining HWY LWLL CN B-10?
HWY LWLL CN B-10 is owned and maintained by State Highway Agency.
How old is HWY LWLL CN B-10 and does age affect safety?
HWY LWLL CN B-10 was built in 1959, making it 67 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.
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.