CENTER HILL ROAD
Carrying CENTER HILL ROAD over BLAKES BROOK
0.3MI NH9, Merrimack, New Hampshire
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: CENTER HILL ROAD
The CENTER HILL ROAD bridge in Merrimack, New Hampshire carries CENTER HILL ROAD over BLAKES BROOK. It was built in 2008, making it 18 years old today. The structure is built primarily of concrete and spans 1 section, stretching 11.0 meters (36 feet) end to end. Daily traffic averages 833 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. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 42.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How CENTER HILL 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 How the historical reference is calculated.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
- 2008
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 11.0 m (36 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 833 vehicles/day
- Structure Number
- 007901180011600
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 CENTER HILL 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 CENTER HILL 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 CENTER HILL ROAD?
CENTER HILL ROAD in Merrimack, New Hampshire on the FHWA's 0–9 scale.
How often is CENTER HILL ROAD inspected?
CENTER HILL 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 833 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. CENTER HILL 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 CENTER HILL ROAD?
CENTER HILL ROAD has an NBI inventory load rating of 42.0 metric tons.
Who is responsible for maintaining CENTER HILL ROAD?
CENTER HILL ROAD is owned and maintained by City/Municipal Highway Agency.
How old is CENTER HILL ROAD and does age affect safety?
CENTER HILL ROAD was built in 2008, making it 18 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.