LAKE OF EGYPT RD
Carrying LAKE OF EGYPT RD over LAKE EGYPT SPILLWAY
6 MI S MARION, Williamson, Illinois
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: LAKE OF EGYPT RD
The LAKE OF EGYPT RD bridge in Williamson, Illinois carries LAKE OF EGYPT RD over LAKE EGYPT SPILLWAY. It was built in 1962, making it 64 years old today. It was last reconstructed in 2015, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 31.0 meters (102 feet) end to end. Daily traffic averages 2,800 vehicles, placing it in the moderately-trafficked tier of Illinois bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 8/9, 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 40.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How LAKE OF EGYPT 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 How the historical reference is calculated.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
- 1962
- Last Reconstructed
- 2015
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 31.0 m (102 ft)
- Deck Width
- 10.7 m (35 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 2,800 vehicles/day
- Structure Number
- 100306000000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (8/9), showing no significant deterioration.
- • 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 LAKE OF EGYPT 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 LAKE OF EGYPT RD against other structures in Williamson 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 LAKE OF EGYPT RD?
LAKE OF EGYPT RD in Williamson, Illinois has a deck rating of 8/9, superstructure rating of 8/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is LAKE OF EGYPT RD inspected?
LAKE OF EGYPT 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 2,800 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. LAKE OF EGYPT RD 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 LAKE OF EGYPT RD?
LAKE OF EGYPT RD has an NBI inventory load rating of 40.5 metric tons.
Who is responsible for maintaining LAKE OF EGYPT RD?
LAKE OF EGYPT RD is owned and maintained by County Highway Agency.
How old is LAKE OF EGYPT RD and does age affect safety?
LAKE OF EGYPT RD was built in 1962, making it 64 years old and last reconstructed in 2015.
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.