NORTH GREENMOUNT R
Carrying NORTH GREENMOUNT R over RICHLAND CREEK
1.5 MI N SHILOH RD, St. Clair, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: NORTH GREENMOUNT R
The NORTH GREENMOUNT R bridge in St. Clair, Illinois carries NORTH GREENMOUNT R over RICHLAND CREEK. It was built in 1987, making it 39 years old today. It was last reconstructed in 2002, extending its service life. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 49.4 meters (162 feet) end to end. Daily traffic averages 19,200 vehicles, placing it in the heavily-trafficked tier of Illinois bridges. It is owned and maintained by County 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. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 40.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How NORTH GREENMOUNT 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 How the historical reference is calculated.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
- 1987
- Last Reconstructed
- 2002
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 49.4 m (162 ft)
- Deck Width
- 13.5 m (44 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 19,200 vehicles/day
- Structure Number
- 082412100000000
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.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
How to read this record
This page shows what the last federal inspection recorded, not whether NORTH GREENMOUNT 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 NORTH GREENMOUNT 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 NORTH GREENMOUNT R?
NORTH GREENMOUNT 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 NORTH GREENMOUNT R inspected?
NORTH GREENMOUNT 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 19,200 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NORTH GREENMOUNT 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 NORTH GREENMOUNT R?
NORTH GREENMOUNT R has an NBI inventory load rating of 40.8 metric tons.
Who is responsible for maintaining NORTH GREENMOUNT R?
NORTH GREENMOUNT R is owned and maintained by County Highway Agency.
How old is NORTH GREENMOUNT R and does age affect safety?
NORTH GREENMOUNT R was built in 1987, making it 39 years old and last reconstructed in 2002.
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.