SOMONAUK RD.(FAS96
Carrying SOMONAUK RD.(FAS96 over SOMONAUK CREEK
500N. 1540E., DeKalb, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: SOMONAUK RD.(FAS96
The SOMONAUK RD.(FAS96 bridge in DeKalb, Illinois carries SOMONAUK RD.(FAS96 over SOMONAUK CREEK. It was built in 2017, making it 9 years old today. The structure is built primarily of steel and spans 1 section, stretching 26.0 meters (85 feet) end to end. Daily traffic averages 3,200 vehicles, placing it in the moderately-trafficked tier of Illinois bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 8/9, superstructure at 8/9, substructure at 8/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 30.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How SOMONAUK RD.(FAS96 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 How the historical reference is calculated.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
- 2017
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 26.0 m (85 ft)
- Deck Width
- 9.1 m (30 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 3,200 vehicles/day
- Structure Number
- 019307600000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates good at 8/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) is in good condition (8/9), showing no significant deterioration.
- • The substructure (piers and abutments) rates good at 8/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether SOMONAUK RD.(FAS96 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 SOMONAUK RD.(FAS96 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 SOMONAUK RD.(FAS96?
SOMONAUK RD.(FAS96 in DeKalb, Illinois has a deck rating of 8/9, superstructure rating of 8/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is SOMONAUK RD.(FAS96 inspected?
SOMONAUK RD.(FAS96'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 3,200 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SOMONAUK RD.(FAS96 is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for SOMONAUK RD.(FAS96?
SOMONAUK RD.(FAS96 has an NBI inventory load rating of 30.8 metric tons.
Who is responsible for maintaining SOMONAUK RD.(FAS96?
SOMONAUK RD.(FAS96 is owned and maintained by County Highway Agency.
How old is SOMONAUK RD.(FAS96 and does age affect safety?
SOMONAUK RD.(FAS96 was built in 2017, making it 9 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.