SIMPSON ROAD
Carrying SIMPSON ROAD over FULLERS CR
0.2 MI E PRAIRIE RD, Winnebago, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: SIMPSON ROAD
The SIMPSON ROAD bridge in Winnebago, Illinois carries SIMPSON ROAD over FULLERS CR. It was built in 1959, making it 67 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 12.2 meters (40 feet) end to end. Daily traffic averages 700 vehicles, placing it in the lower-traffic tier of Illinois bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show culvert at 4/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules. Its NBI inventory load rating is 27.2 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How SIMPSON ROAD 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 How the historical reference is calculated.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
- 1959
- Material
- Concrete
- Number of Spans
- 3
- Structure Length
- 12.2 m (40 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 700 vehicles/day
- Structure Number
- 101503700000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
SIMPSON ROAD 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 SIMPSON ROAD against other structures in Winnebago 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 SIMPSON ROAD?
SIMPSON ROAD in Winnebago, Illinois on the FHWA's 0–9 scale.
How often is SIMPSON ROAD inspected?
SIMPSON 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 700 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SIMPSON ROAD 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 SIMPSON ROAD?
SIMPSON ROAD has an NBI inventory load rating of 27.2 metric tons.
Who is responsible for maintaining SIMPSON ROAD?
SIMPSON ROAD is owned and maintained by City/Municipal Highway Agency.
How old is SIMPSON ROAD and does age affect safety?
SIMPSON ROAD was built in 1959, making it 67 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.