US ROUTE 20 WB
Carrying US ROUTE 20 WB over PECATONICA RIVER
2.5 MI W IL RTE 26, Stephenson, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: US ROUTE 20 WB
The US ROUTE 20 WB bridge in Stephenson, Illinois carries US ROUTE 20 WB over PECATONICA RIVER. It was built in 2011, making it 15 years old today. The structure is built primarily of steel continuous and spans 7 sections, stretching 231.0 meters (758 feet) end to end. Daily traffic averages 6,150 vehicles, placing it in the moderately-trafficked tier of Illinois bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 46.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How US ROUTE 20 WB compares
Live comparison across Illinois.
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 How the historical reference is calculated.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
- 2011
- Material
- Steel Continuous
- Number of Spans
- 7
- Structure Length
- 231.0 m (758 ft)
- Deck Width
- 13.2 m (43 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 6,150 vehicles/day
- Structure Number
- 089008200000000
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 good at 7/9, with no significant deterioration on file.
- • 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 US ROUTE 20 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 US ROUTE 20 WB against other structures in Stephenson and across Illinois. Illinois 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 US ROUTE 20 WB?
US ROUTE 20 WB in Stephenson, Illinois has a deck rating of 5/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is US ROUTE 20 WB inspected?
US ROUTE 20 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 6,150 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. US ROUTE 20 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 US ROUTE 20 WB?
US ROUTE 20 WB has an NBI inventory load rating of 46.7 metric tons.
Who is responsible for maintaining US ROUTE 20 WB?
US ROUTE 20 WB is owned and maintained by State Highway Agency.
How old is US ROUTE 20 WB and does age affect safety?
US ROUTE 20 WB was built in 2011, making it 15 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.