NH 16,SP TPK NB
Carrying NH 16,SP TPK NB over NH108,CSX(ABD)
0.2 MI FROM JCT. RTE 16, Strafford, New Hampshire
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: NH 16,SP TPK NB
The NH 16,SP TPK NB bridge in Strafford, New Hampshire carries NH 16,SP TPK NB over NH108,CSX(ABD). It was built in 1957, making it 69 years old today. It was last reconstructed in 1999, extending its service life. The structure is built primarily of steel continuous and spans 4 sections, stretching 62.8 meters (206 feet) end to end. Daily traffic averages 21,665 vehicles, placing it in the heavily-trafficked tier of New Hampshire bridges. It is owned and maintained by State Toll Authority.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 6/9, substructure at 5/9. 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. Its NBI inventory load rating is 26.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How NH 16,SP TPK NB 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 How the historical reference is calculated.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
- 1957
- Last Reconstructed
- 1999
- Material
- Steel Continuous
- Number of Spans
- 4
- Structure Length
- 62.8 m (206 ft)
- Deck Width
- 14.6 m (48 ft)
- Owner
- State Toll Authority
- Avg Daily Traffic
- 21,665 vehicles/day
- Structure Number
- 006501320010200
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • The substructure (piers and abutments) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
How to read this record
NH 16,SP TPK NB 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 NH 16,SP TPK NB 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 NH 16,SP TPK NB?
NH 16,SP TPK NB in Strafford, New Hampshire has a deck rating of 4/9, superstructure rating of 6/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is NH 16,SP TPK NB inspected?
NH 16,SP TPK NB'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 21,665 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NH 16,SP TPK NB 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 NH 16,SP TPK NB?
NH 16,SP TPK NB has an NBI inventory load rating of 26.5 metric tons.
Who is responsible for maintaining NH 16,SP TPK NB?
NH 16,SP TPK NB is owned and maintained by State Toll Authority.
How old is NH 16,SP TPK NB and does age affect safety?
NH 16,SP TPK NB was built in 1957, making it 69 years old and last reconstructed in 1999.
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.