HIGH PRAIRIE SCH R
Carrying HIGH PRAIRIE SCH R over DOUGLAS CREEK
1.2 MILE N, CH 47, St. Clair, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: HIGH PRAIRIE SCH R
The HIGH PRAIRIE SCH R bridge in St. Clair, Illinois carries HIGH PRAIRIE SCH R over DOUGLAS CREEK. It was built in 1999, making it 27 years old today. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 30.4 meters (100 feet) end to end. Daily traffic averages 200 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 32.4 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How HIGH PRAIRIE SCH R 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 How the historical reference is calculated.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
- 1999
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 30.4 m (100 ft)
- Deck Width
- 7.3 m (24 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 200 vehicles/day
- Structure Number
- 082414100000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • 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 HIGH PRAIRIE SCH R 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 HIGH PRAIRIE SCH R against other structures in St. Clair 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 HIGH PRAIRIE SCH R?
HIGH PRAIRIE SCH R in St. Clair, 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 HIGH PRAIRIE SCH R inspected?
HIGH PRAIRIE SCH R'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 200 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. HIGH PRAIRIE SCH R 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 HIGH PRAIRIE SCH R?
HIGH PRAIRIE SCH R has an NBI inventory load rating of 32.4 metric tons.
Who is responsible for maintaining HIGH PRAIRIE SCH R?
HIGH PRAIRIE SCH R is owned and maintained by Town/Township Highway Agency.
How old is HIGH PRAIRIE SCH R and does age affect safety?
HIGH PRAIRIE SCH R was built in 1999, making it 27 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.