GREAT BROOK ROAD
Carrying GREAT BROOK ROAD over GREAT BROOK
380 FT FR NH RTE 120, Grafton, New Hampshire
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: GREAT BROOK ROAD
The GREAT BROOK ROAD bridge in Grafton, New Hampshire carries GREAT BROOK ROAD over GREAT BROOK. It was built in 1936, making it 90 years old today. It was last reconstructed in 1993, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 11.6 meters (38 feet) end to end. Daily traffic averages 105 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 5/9, superstructure at 5/9, substructure at 5/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 25.1 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How GREAT BROOK 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 How the historical reference is calculated.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
- 1936
- Last Reconstructed
- 1993
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 11.6 m (38 ft)
- Deck Width
- 4.9 m (16 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 105 vehicles/day
- Structure Number
- 014401520006000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.
How to read this record
This page shows what the last federal inspection recorded, not whether GREAT BROOK 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 GREAT BROOK ROAD against other structures in Grafton 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 GREAT BROOK ROAD?
GREAT BROOK ROAD in Grafton, New Hampshire has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is GREAT BROOK ROAD inspected?
GREAT BROOK 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 105 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. GREAT BROOK ROAD is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for GREAT BROOK ROAD?
GREAT BROOK ROAD has an NBI inventory load rating of 25.1 metric tons.
Who is responsible for maintaining GREAT BROOK ROAD?
GREAT BROOK ROAD is owned and maintained by City/Municipal Highway Agency.
How old is GREAT BROOK ROAD and does age affect safety?
GREAT BROOK ROAD was built in 1936, making it 90 years old and last reconstructed in 1993.
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.