FHWA NBI 2024 Inspection record Public-domain dataset

I-55 BUSN LOOP SB

Carrying I-55 BUSN LOOP SB over I-74/SW BLOOMINGTON

55 BUSN LP OV I-74, McLean, Illinois

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Unknown

Bridge Snapshot: I-55 BUSN LOOP SB

The I-55 BUSN LOOP SB bridge in McLean, Illinois carries I-55 BUSN LOOP SB over I-74/SW BLOOMINGTON. It was built in 2013, making it 13 years old today. The structure is built primarily of steel. Daily traffic averages 21,800 vehicles, placing it in the heavily-trafficked tier of Illinois bridges.

The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. All reported major components score above the Poor range.

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

How I-55 BUSN LOOP SB compares

624
Bridges in McLean · 11 in Poor condition

Live comparison across Illinois.

Historical Sufficiency Rating

PlainBridge-computed
95.3 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
26.0
Essentiality /15
14.3
Special reductions
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 How the historical reference is calculated.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

Overall Condition
Unrated

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

Structural Details

Year Built
2013
Material
Steel
Avg Daily Traffic
21,800 vehicles/day
Structure Number
057025400000000

How to read this record

This page shows what the last federal inspection recorded, not whether I-55 BUSN LOOP SB 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 I-55 BUSN LOOP SB against other structures in McLean 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 I-55 BUSN LOOP SB?

I-55 BUSN LOOP SB in McLean, Illinois on the FHWA's 0–9 scale.

How often is I-55 BUSN LOOP SB inspected?

I-55 BUSN LOOP SB'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 21,800 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. I-55 BUSN LOOP SB 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 I-55 BUSN LOOP SB?

An inventory load rating is not recorded for I-55 BUSN LOOP SB.

Who is responsible for maintaining I-55 BUSN LOOP SB?

Ownership is not specified for I-55 BUSN LOOP SB in the NBI.

How old is I-55 BUSN LOOP SB and does age affect safety?

I-55 BUSN LOOP SB was built in 2013, making it 13 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.