LAWRENCEVILLE ROAD
Carrying LAWRENCEVILLE ROAD over PISCASAW CREEK
0.5 MI E BELVIDERE L, Boone, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: LAWRENCEVILLE ROAD
The LAWRENCEVILLE ROAD bridge in Boone, Illinois carries LAWRENCEVILLE ROAD over PISCASAW CREEK. It was built in 1974, making it 52 years old today. The structure is built primarily of prestressed concrete and spans 3 sections, stretching 44.3 meters (145 feet) end to end. Daily traffic averages 2,050 vehicles, placing it in the moderately-trafficked tier of Illinois bridges. It is owned and maintained by Town/Township Highway Agency.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 4/9, substructure at 6/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules. Its NBI inventory load rating is 28.2 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How LAWRENCEVILLE ROAD 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 How the historical reference is calculated.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
- 1974
- Material
- Prestressed Concrete
- Number of Spans
- 3
- Structure Length
- 44.3 m (145 ft)
- Deck Width
- 8.5 m (28 ft)
- Owner
- Town/Township Highway Agency
- Avg Daily Traffic
- 2,050 vehicles/day
- Structure Number
- 004306500000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 4/9, the deck (driving surface) is in poor shape, with advanced wear flagged for priority repair.
- • The superstructure (beams and supports above the deck) rates poor at 4/9, advanced deterioration that should be prioritized for repair.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
How to read this record
LAWRENCEVILLE ROAD 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 LAWRENCEVILLE ROAD against other structures in Boone 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 LAWRENCEVILLE ROAD?
LAWRENCEVILLE ROAD in Boone, Illinois has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is LAWRENCEVILLE ROAD inspected?
LAWRENCEVILLE ROAD'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 2,050 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. LAWRENCEVILLE ROAD 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 LAWRENCEVILLE ROAD?
LAWRENCEVILLE ROAD has an NBI inventory load rating of 28.2 metric tons.
Who is responsible for maintaining LAWRENCEVILLE ROAD?
LAWRENCEVILLE ROAD is owned and maintained by Town/Township Highway Agency.
How old is LAWRENCEVILLE ROAD and does age affect safety?
LAWRENCEVILLE ROAD was built in 1974, making it 52 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.