DOUGHERTY LANE
Carrying DOUGHERTY LANE over MID BR PISCATAQUOG RIVER
0.8 MI FR SANDERS HILL R, Hillsborough, New Hampshire
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: DOUGHERTY LANE
The DOUGHERTY LANE bridge in Hillsborough, New Hampshire carries DOUGHERTY LANE over MID BR PISCATAQUOG RIVER. It was built in 2004, making it 22 years old today. The structure is built primarily of concrete and spans 1 section, stretching 6.7 meters (22 feet) end to end. Daily traffic averages 90 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 a deck rating of 1/9, superstructure at 1/9, substructure at 1/9. The weakest component sits in critical condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How DOUGHERTY LANE 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 How the historical reference is calculated.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
- 2004
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 6.7 m (22 ft)
- Deck Width
- 6.1 m (20 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 90 vehicles/day
- Structure Number
- 017900910015500
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 1/9, the deck (driving surface) is in critical shape, with severe wear requiring urgent action.
- • At 1/9, the superstructure (beams and supports above the deck) is in critical shape, with severe wear requiring urgent action.
- • The substructure (piers and abutments) is in critical condition (1/9), with severe deterioration requiring urgent attention.
How to read this record
DOUGHERTY LANE 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 DOUGHERTY LANE against other structures in Hillsborough 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 DOUGHERTY LANE?
DOUGHERTY LANE in Hillsborough, New Hampshire has a deck rating of 1/9, superstructure rating of 1/9, and substructure rating of 1/9 on the FHWA's 0–9 scale.
How often is DOUGHERTY LANE inspected?
DOUGHERTY LANE'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 90 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. DOUGHERTY LANE 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 DOUGHERTY LANE?
An inventory load rating is not recorded for DOUGHERTY LANE.
Who is responsible for maintaining DOUGHERTY LANE?
DOUGHERTY LANE is owned and maintained by City/Municipal Highway Agency.
How old is DOUGHERTY LANE and does age affect safety?
DOUGHERTY LANE was built in 2004, making it 22 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.