WEBSTER MILLS ROAD
Carrying WEBSTER MILLS ROAD over SANBORN BROOK
0.8MI. PITTSFIELD TL, Merrimack, New Hampshire
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: WEBSTER MILLS ROAD
The WEBSTER MILLS ROAD bridge in Merrimack, New Hampshire carries WEBSTER MILLS ROAD over SANBORN BROOK. It was built in 2006, making it 20 years old today. The structure is built primarily of concrete and spans 1 section, stretching 7.3 meters (24 feet) end to end. Daily traffic averages 518 vehicles, placing it in the lower-traffic tier of New Hampshire bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show culvert at 8/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 43.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How WEBSTER MILLS ROAD compares
Live comparison across New Hampshire.
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 How the historical reference is calculated.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
- 2006
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 7.3 m (24 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 518 vehicles/day
- Structure Number
- 004601520014400
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 WEBSTER MILLS ROAD 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 WEBSTER MILLS ROAD against other structures in Merrimack and across New Hampshire. New Hampshire 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 WEBSTER MILLS ROAD?
WEBSTER MILLS ROAD in Merrimack, New Hampshire on the FHWA's 0–9 scale.
How often is WEBSTER MILLS ROAD inspected?
WEBSTER MILLS ROAD'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 518 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. WEBSTER MILLS ROAD 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 WEBSTER MILLS ROAD?
WEBSTER MILLS ROAD has an NBI inventory load rating of 43.5 metric tons.
Who is responsible for maintaining WEBSTER MILLS ROAD?
WEBSTER MILLS ROAD is owned and maintained by City/Municipal Highway Agency.
How old is WEBSTER MILLS ROAD and does age affect safety?
WEBSTER MILLS ROAD was built in 2006, making it 20 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.