ROCKWELL RD
Carrying ROCKWELL RD over VERMILION RIVER
E OF UNION ST, LaSalle, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: ROCKWELL RD
The ROCKWELL RD bridge in LaSalle, Illinois carries ROCKWELL RD over VERMILION RIVER. It was built in 1940, making it 86 years old today. It was last reconstructed in 2010, extending its service life. The structure is built primarily of steel and spans 2 sections, stretching 48.2 meters (158 feet) end to end. Daily traffic averages 250 vehicles, placing it in the lower-traffic tier of Illinois bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 4/9, substructure at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How ROCKWELL RD 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 How the historical reference is calculated.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
- 1940
- Last Reconstructed
- 2010
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 48.2 m (158 ft)
- Deck Width
- 6.9 m (23 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 250 vehicles/day
- Structure Number
- 050650200000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
- • The superstructure (beams and supports above the deck) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
- • The substructure (piers and abutments) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
How to read this record
ROCKWELL RD is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare ROCKWELL RD against other structures in LaSalle 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 ROCKWELL RD?
ROCKWELL RD in LaSalle, Illinois has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is ROCKWELL RD inspected?
ROCKWELL 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 250 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. ROCKWELL RD is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for ROCKWELL RD?
An inventory load rating is not recorded for ROCKWELL RD.
Who is responsible for maintaining ROCKWELL RD?
ROCKWELL RD is owned and maintained by City/Municipal Highway Agency.
How old is ROCKWELL RD and does age affect safety?
ROCKWELL RD was built in 1940, making it 86 years old and last reconstructed in 2010.
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.