OLD COUNTY RD N
Carrying OLD COUNTY RD N over COLLINS BROOK
2.4 MI. DEERING TL, Hillsborough, New Hampshire
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
OLD COUNTY RD N in Hillsborough, New Hampshire sits above 1% of rated New Hampshire bridges on inventory load rating (0 t), while its 1981 build year is earlier than 44% of Hillsborough's recorded-year cohort (385 bridges).
OLD COUNTY RD N in Hillsborough, New Hampshire is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1981, it carries 1 rated component 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 NH:008600910014200
LATE-CENTURY · STEEL · MULTI-SPAN · CULVERT-LED · LOCAL-ADT · TRACE-LOAD · CAT-POOR
- LATE-CENTURY 1980–1999
- STEEL Steel
- MULTI-SPAN 2 spans
- CULVERT-LED Culvert-led
- LOCAL-ADT Local ADT
- TRACE-LOAD Trace 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: OLD COUNTY RD N
The OLD COUNTY RD N bridge in Hillsborough, New Hampshire carries OLD COUNTY RD N over COLLINS BROOK. It was built in 1981, making it 45 years old today. The structure is built primarily of steel and spans 2 sections, stretching 9.1 meters (30 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 culvert at 3/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order.
How OLD COUNTY RD N compares
Age against the county: built in 1981, earlier than 168 of Hillsborough's 385 bridges with a recorded construction year (44%), against a county median build year of 1973. This is one of the newer structures in its county.
Live comparison across New Hampshire bridges with a recorded inventory load rating (2,540 of 2,542 rated).
OLD COUNTY RD N vs every rated New Hampshire bridge
Inventory load rating (metric tons), FHWA NBI, this state
0 Top 99% higher than 1% of 2,540 bridges
rated New Hampshire 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.
Hillsborough inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 385 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
- 1981
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 9.1 m (30 ft) 0
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 90 vehicles/day
- Structure Number
- 008600910014200
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
OLD COUNTY RD N 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 OLD COUNTY RD N 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 OLD COUNTY RD N?
OLD COUNTY RD N in Hillsborough, New Hampshire on the FHWA's 0–9 scale.
How often is OLD COUNTY RD N inspected?
OLD COUNTY RD N'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. OLD COUNTY RD N 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 OLD COUNTY RD N?
OLD COUNTY RD N has an NBI inventory load rating of 0.0 metric tons.
Who is responsible for maintaining OLD COUNTY RD N?
OLD COUNTY RD N is owned and maintained by City/Municipal Highway Agency.
How old is OLD COUNTY RD N and does age affect safety?
OLD COUNTY RD N was built in 1981, making it 45 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.