WISWALL ROAD
Carrying WISWALL ROAD over LAMPREY RIVER
0.6 MI. LEE TL, Strafford, New Hampshire
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
WISWALL ROAD in Strafford, New Hampshire sits above 94% of rated New Hampshire bridges on inventory load rating (66 t), while its 2010 build year is earlier than 13% of Strafford's recorded-year cohort (136 bridges).
WISWALL ROAD in Strafford, New Hampshire is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 2010, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 8. The lowest applicable rating sets the federal condition category, so this Good 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:007000700007300
POST-2000 · CONCRETE · SINGLE-SPAN · TIED-CTRL · LOCAL-ADT · HEAVY-LOAD · CAT-GOOD
- POST-2000 2000+
- CONCRETE Concrete
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- LOCAL-ADT Local ADT
- HEAVY-LOAD Heavy load
- CAT-GOOD Good
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: WISWALL ROAD
The WISWALL ROAD bridge in Strafford, New Hampshire carries WISWALL ROAD over LAMPREY RIVER. It was built in 2010, making it 16 years old today. The structure is built primarily of concrete and spans 1 section, stretching 34.1 meters (112 feet) end to end. Daily traffic averages 253 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 8/9, superstructure at 8/9, substructure at 8/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How WISWALL ROAD compares
Age against the county: built in 2010, earlier than 18 of Strafford's 136 bridges with a recorded construction year (13%), against a county median build year of 1970. 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).
WISWALL ROAD vs every rated New Hampshire bridge
Inventory load rating (metric tons), FHWA NBI, this state
66 Top 6% higher than 94% 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.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Strafford inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 136 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
- 2010
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 34.1 m (112 ft)
- Deck Width
- 5.2 m (17 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 253 vehicles/day
- Structure Number
- 007000700007300
Condition Analysis
- • The deck (driving surface) rates good at 8/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) is in good condition (8/9), showing no significant deterioration.
- • The substructure (piers and abutments) is in good condition (8/9), showing no significant deterioration.
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 WISWALL 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 WISWALL ROAD against other structures in Strafford 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 WISWALL ROAD?
WISWALL ROAD in Strafford, New Hampshire has a deck rating of 8/9, superstructure rating of 8/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is WISWALL ROAD inspected?
WISWALL 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 253 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. WISWALL 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 WISWALL ROAD?
WISWALL ROAD has an NBI inventory load rating of 65.6 metric tons.
Who is responsible for maintaining WISWALL ROAD?
WISWALL ROAD is owned and maintained by City/Municipal Highway Agency.
How old is WISWALL ROAD and does age affect safety?
WISWALL ROAD was built in 2010, making it 16 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.