NW 20TH ST WB
Carrying NW 20TH ST WB over LWDD E-4 (El Rio) Canal
0.5MI W of N DIXIE HIGHWY, Palm Beach, Florida
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: NW 20TH ST WB
The NW 20TH ST WB bridge in Palm Beach, Florida carries NW 20TH ST WB over LWDD E-4 (El Rio) Canal. It was built in 1962, making it 64 years old today. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 18.3 meters (60 feet) end to end. Daily traffic averages 12,000 vehicles, placing it in the heavily-trafficked tier of Florida 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 7/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 35.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How NW 20TH ST WB compares
Live comparison across Florida.
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 How the historical reference is calculated.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
- 1962
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 18.3 m (60 ft)
- Deck Width
- 11.0 m (36 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 12,000 vehicles/day
- Structure Number
- 934421
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
- • At 5/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether NW 20TH ST WB 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 NW 20TH ST WB against other structures in Palm Beach and across Florida. Florida 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 NW 20TH ST WB?
NW 20TH ST WB in Palm Beach, Florida has a deck rating of 5/9, superstructure rating of 5/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is NW 20TH ST WB inspected?
NW 20TH ST WB'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 12,000 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NW 20TH ST WB 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 NW 20TH ST WB?
NW 20TH ST WB has an NBI inventory load rating of 35.7 metric tons.
Who is responsible for maintaining NW 20TH ST WB?
NW 20TH ST WB is owned and maintained by City/Municipal Highway Agency.
How old is NW 20TH ST WB and does age affect safety?
NW 20TH ST WB was built in 1962, making it 64 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.