FHWA NBI 2024 Inspection record Public-domain dataset

E CYCLONE RIDGE RO

Carrying E CYCLONE RIDGE RO over ROCK CREEK

1 MI S LANARK, Carroll, Illinois

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
17 t Inventory load rating

Bridge Snapshot: E CYCLONE RIDGE RO

The E CYCLONE RIDGE RO bridge in Carroll, Illinois carries E CYCLONE RIDGE RO over ROCK CREEK. It was built in 1954, making it 72 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 9.8 meters (32 feet) end to end. Daily traffic averages 150 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 culvert at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 17.2 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How E CYCLONE RIDGE RO compares

▼ 17.4
Load rating vs Illinois average (34.6 t)
Bottom 3%
Lower load rating than 97% of Illinois bridges
185
Bridges in Carroll · 19 in Poor condition
E CYCLONE RIDGE RO 17.2 t
Illinois average 34.6 t

Live comparison across Illinois.

Historical Sufficiency Rating

PlainBridge-computed
76.6 / 100 - historical 50–79.9 band
Structural adequacy /55
35.7
Serviceability /30
29.0
Essentiality /15
14.9
Special reductions
−3.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Culvert
6/9
Fair (5–6)
Inventory Load Rating
17.2 t
NBI inventory level (metric tons)
Overall Condition
Fair

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1954
Material
Concrete
Number of Spans
3
Structure Length
9.8 m (32 ft)
Owner
Town/Township Highway Agency
Avg Daily Traffic
150 vehicles/day
Structure Number
008380200000000

How to read this record

This page shows what the last federal inspection recorded, not whether E CYCLONE RIDGE RO 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 E CYCLONE RIDGE RO against other structures in Carroll 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 E CYCLONE RIDGE RO?

E CYCLONE RIDGE RO in Carroll, Illinois on the FHWA's 0–9 scale.

How often is E CYCLONE RIDGE RO inspected?

E CYCLONE RIDGE RO'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 150 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. E CYCLONE RIDGE RO is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for E CYCLONE RIDGE RO?

E CYCLONE RIDGE RO has an NBI inventory load rating of 17.2 metric tons.

Who is responsible for maintaining E CYCLONE RIDGE RO?

E CYCLONE RIDGE RO is owned and maintained by Town/Township Highway Agency.

How old is E CYCLONE RIDGE RO and does age affect safety?

E CYCLONE RIDGE RO was built in 1954, making it 72 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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

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.