CHAIN OF ROCKS ROA
Carrying CHAIN OF ROCKS ROA over OVER IL 255 (FAP310)
2 M WEST OF IL 157, Madison, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: CHAIN OF ROCKS ROA
The CHAIN OF ROCKS ROA bridge in Madison, Illinois carries CHAIN OF ROCKS ROA over OVER IL 255 (FAP310). It was built in 1994, making it 32 years old today. The structure is built primarily of steel continuous. Daily traffic averages 3,750 vehicles, placing it in the moderately-trafficked tier of Illinois bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. None of this bridge's reported major components fall into the Poor condition range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How CHAIN OF ROCKS ROA 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 How the historical reference is calculated.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
- 1994
- Material
- Steel Continuous
- Avg Daily Traffic
- 3,750 vehicles/day
- Structure Number
- 060024500000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether CHAIN OF ROCKS ROA 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 CHAIN OF ROCKS ROA against other structures in Madison 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 CHAIN OF ROCKS ROA?
CHAIN OF ROCKS ROA in Madison, Illinois on the FHWA's 0–9 scale.
How often is CHAIN OF ROCKS ROA inspected?
CHAIN OF ROCKS ROA'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 3,750 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. CHAIN OF ROCKS ROA is currently shown as unrated condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for CHAIN OF ROCKS ROA?
An inventory load rating is not recorded for CHAIN OF ROCKS ROA.
Who is responsible for maintaining CHAIN OF ROCKS ROA?
Ownership is not specified for CHAIN OF ROCKS ROA in the NBI.
How old is CHAIN OF ROCKS ROA and does age affect safety?
CHAIN OF ROCKS ROA was built in 1994, making it 32 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.