SHABBONA GROVE RD
Carrying SHABBONA GROVE RD over BIG INDIAN CREEK
700N 495E, DeKalb, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: SHABBONA GROVE RD
The SHABBONA GROVE RD bridge in DeKalb, Illinois carries SHABBONA GROVE RD over BIG INDIAN CREEK. It was built in 1956, making it 70 years old today. The structure is built primarily of concrete continuous and spans 2 sections, stretching 17.7 meters (58 feet) end to end. Daily traffic averages 375 vehicles, placing it in the lower-traffic tier of Illinois bridges. It is owned and maintained by Town/Township Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 24.3 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How SHABBONA GROVE RD 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 How the historical reference is calculated.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
- 1956
- Material
- Concrete Continuous
- Number of Spans
- 2
- Structure Length
- 17.7 m (58 ft)
- Deck Width
- 8.8 m (29 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 375 vehicles/day
- Structure Number
- 019520400000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • At 6/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
This page shows what the last federal inspection recorded, not whether SHABBONA GROVE RD 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 SHABBONA GROVE RD against other structures in DeKalb 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 SHABBONA GROVE RD?
SHABBONA GROVE RD in DeKalb, Illinois has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is SHABBONA GROVE RD inspected?
SHABBONA GROVE RD'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 375 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SHABBONA GROVE RD 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 SHABBONA GROVE RD?
SHABBONA GROVE RD has an NBI inventory load rating of 24.3 metric tons.
Who is responsible for maintaining SHABBONA GROVE RD?
SHABBONA GROVE RD is owned and maintained by Town/Township Highway Agency.
How old is SHABBONA GROVE RD and does age affect safety?
SHABBONA GROVE RD was built in 1956, making it 70 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.