FHWA NBI 2024 Inspection record Public-domain dataset

CH 20 LAMOILLE RD

Carrying CH 20 LAMOILLE RD over DRAINAGE DITCH

1.7 MI N BUREAU CO L, Lee, Illinois

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
24 t Inventory load rating

Bridge Snapshot: CH 20 LAMOILLE RD

The CH 20 LAMOILLE RD bridge in Lee, Illinois carries CH 20 LAMOILLE RD over DRAINAGE DITCH. It was built in 1931, making it 95 years old today. It was last reconstructed in 1970, extending its service life. The structure is built primarily of concrete and spans 2 sections, stretching 8.2 meters (27 feet) end to end. Daily traffic averages 600 vehicles, placing it in the lower-traffic tier of Illinois bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show culvert at 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 24.3 metric tons.

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

How CH 20 LAMOILLE RD compares

▼ 10.3
Load rating vs Illinois average (34.6 t)
Bottom 10%
Lower load rating than 90% of Illinois bridges
372
Bridges in Lee · 44 in Poor condition
CH 20 LAMOILLE RD 24.3 t
Illinois average 34.6 t

Live comparison across Illinois.

Historical Sufficiency Rating

PlainBridge-computed
88.7 / 100 - historical 80–100 band
Structural adequacy /55
47.5
Serviceability /30
30.0
Essentiality /15
14.2
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 How the historical reference is calculated.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
24.3 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1931
Last Reconstructed
1970
Material
Concrete
Number of Spans
2
Structure Length
8.2 m (27 ft)
Owner
County Highway Agency
Avg Daily Traffic
600 vehicles/day
Structure Number
052506800000000

How to read this record

This page shows what the last federal inspection recorded, not whether CH 20 LAMOILLE RD 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 CH 20 LAMOILLE RD against other structures in Lee 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 CH 20 LAMOILLE RD?

CH 20 LAMOILLE RD in Lee, Illinois on the FHWA's 0–9 scale.

How often is CH 20 LAMOILLE RD inspected?

CH 20 LAMOILLE RD'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 600 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. CH 20 LAMOILLE RD 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 CH 20 LAMOILLE RD?

CH 20 LAMOILLE RD has an NBI inventory load rating of 24.3 metric tons.

Who is responsible for maintaining CH 20 LAMOILLE RD?

CH 20 LAMOILLE RD is owned and maintained by County Highway Agency.

How old is CH 20 LAMOILLE RD and does age affect safety?

CH 20 LAMOILLE RD was built in 1931, making it 95 years old and last reconstructed in 1970.

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.