NH 10
Carrying NH 10 over JACOBS BROOK
3.4 MI FROM LYME TL, Grafton, New Hampshire
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
NH 10 in Grafton, New Hampshire sits above 89% of rated New Hampshire bridges on inventory load rating (55 t), while its 1938 build year is earlier than 79% of Grafton's recorded-year cohort (544 bridges).
NH 10 in Grafton, New Hampshire is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1938, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 5. The lowest applicable rating sets the federal condition category, so this Fair 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:020300750012600
PRE-1950 · CONCRETE · SINGLE-SPAN · CULVERT-LED · ARTERIAL-ADT · HEAVY-LOAD · CAT-FAIR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- SINGLE-SPAN Single span
- CULVERT-LED Culvert-led
- ARTERIAL-ADT Arterial ADT
- HEAVY-LOAD Heavy load
- CAT-FAIR Fair
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: NH 10
The NH 10 bridge in Grafton, New Hampshire carries NH 10 over JACOBS BROOK. It was built in 1938, making it 88 years old today. It was last reconstructed in 1981, extending its service life. The structure is built primarily of concrete and spans 1 section, stretching 11.6 meters (38 feet) end to end. Daily traffic averages 1,348 vehicles, placing it in the moderately-trafficked tier of New Hampshire bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 5/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range.
How NH 10 compares
Age against the county: built in 1938, earlier than 431 of Grafton's 544 bridges with a recorded construction year (79%), against a county median build year of 1968. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across New Hampshire bridges with a recorded inventory load rating (2,540 of 2,542 rated).
NH 10 vs every rated New Hampshire bridge
Inventory load rating (metric tons), FHWA NBI, this state
55 Top 11% higher than 89% 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.
Grafton inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 544 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
- 1938
- Last Reconstructed
- 1981
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 11.6 m (38 ft) 0
- Owner
- State Highway Agency
- Avg Daily Traffic
- 1,348 vehicles/day
- Structure Number
- 020300750012600
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 NH 10 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 NH 10 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 NH 10?
NH 10 in Grafton, New Hampshire on the FHWA's 0–9 scale.
How often is NH 10 inspected?
NH 10'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 1,348 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NH 10 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 NH 10?
NH 10 has an NBI inventory load rating of 55.2 metric tons.
Who is responsible for maintaining NH 10?
NH 10 is owned and maintained by State Highway Agency.
How old is NH 10 and does age affect safety?
NH 10 was built in 1938, making it 88 years old and last reconstructed in 1981.
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.