OLD US 34 SBI 18
Carrying OLD US 34 SBI 18 over INDIAN CREEK
IN EARLVILLE, LaSalle, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: OLD US 34 SBI 18
The OLD US 34 SBI 18 bridge in LaSalle, Illinois carries OLD US 34 SBI 18 over INDIAN CREEK. It was built in 1996, making it 30 years old today. The structure is built primarily of steel and spans 1 section, stretching 29.4 meters (96 feet) end to end. Daily traffic averages 1,400 vehicles, placing it in the moderately-trafficked tier of Illinois bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 8/9, substructure at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 53.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How OLD US 34 SBI 18 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 How the historical reference is calculated.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
- 1996
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 29.4 m (96 ft)
- Deck Width
- 11.5 m (38 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 1,400 vehicles/day
- Structure Number
- 050023300000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • The superstructure (beams and supports above the deck) rates good at 8/9, with no significant deterioration on file.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether OLD US 34 SBI 18 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 OLD US 34 SBI 18 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 OLD US 34 SBI 18?
OLD US 34 SBI 18 in LaSalle, Illinois has a deck rating of 7/9, superstructure rating of 8/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is OLD US 34 SBI 18 inspected?
OLD US 34 SBI 18'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 1,400 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. OLD US 34 SBI 18 is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for OLD US 34 SBI 18?
OLD US 34 SBI 18 has an NBI inventory load rating of 53.8 metric tons.
Who is responsible for maintaining OLD US 34 SBI 18?
OLD US 34 SBI 18 is owned and maintained by State Highway Agency.
How old is OLD US 34 SBI 18 and does age affect safety?
OLD US 34 SBI 18 was built in 1996, making it 30 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.