MINOOKA RD TR-3B
Carrying MINOOKA RD TR-3B over SARATOGA CREEK
.71 MI W MIDDLE RD, Grundy, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MINOOKA RD TR-3B
The MINOOKA RD TR-3B bridge in Grundy, Illinois carries MINOOKA RD TR-3B over SARATOGA CREEK. It was built in 1975, making it 51 years old today. The structure is built primarily of concrete and spans 1 section, stretching 10.4 meters (34 feet) end to end. Daily traffic averages 300 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 7/9, superstructure at 7/9, substructure at 7/9. 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 MINOOKA RD TR-3B 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 How the historical reference is calculated.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
- 1975
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 10.4 m (34 ft)
- Deck Width
- 8.0 m (26 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 300 vehicles/day
- Structure Number
- 032376000000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • 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 MINOOKA RD TR-3B 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 MINOOKA RD TR-3B against other structures in Grundy 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 MINOOKA RD TR-3B?
MINOOKA RD TR-3B in Grundy, Illinois has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is MINOOKA RD TR-3B inspected?
MINOOKA RD TR-3B'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 300 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MINOOKA RD TR-3B 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 MINOOKA RD TR-3B?
MINOOKA RD TR-3B has an NBI inventory load rating of 30.8 metric tons.
Who is responsible for maintaining MINOOKA RD TR-3B?
MINOOKA RD TR-3B is owned and maintained by Town/Township Highway Agency.
How old is MINOOKA RD TR-3B and does age affect safety?
MINOOKA RD TR-3B was built in 1975, making it 51 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.