Randolph County, IL

155 public highway bridges

Randolph County Bridge Snapshot

Randolph County, Illinois contains 155 public highway bridges in the FHWA National Bridge Inventory. Roughly 56.8% are rated “Good,” 31.6% “Fair,” 6.5% “Poor,” and 6.5% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in IL are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

155
Total Bridges
56.8%
Good
6.5%
Poor
6.5%
Structurally Deficient

Condition Distribution

Good
56.8% (88)
Fair
31.6% (49)
Poor
6.5% (10)
SD
6.5% (10)

All Bridges (155)

ILL 154

Poor

Over: PLUM CREEK

3.6 MI W OF SPARTA, Randolph, IL

Built 1972 Load: 35.0 t ADT: 2,900

ILL 3

Poor

Over: NINE MILE CREEK

4 MI S EVANSVILLE, Randolph, IL

Built 1952 Load: 37.9 t ADT: 5,650

ILL 155

Poor

Over: PRAIRIE DU ROCHER CR

NEAR WCL P DU ROCHER, Randolph, IL

Built 1990 Load: 40.5 t ADT: 100

ILL 153

Structurally Deficient

Over: MARY'S RIVER

1 MI N OF EDEN, Randolph, IL

Built 1934 Load: 22.4 t ADT: 1,600

TR 232

Structurally Deficient

Over: COX CREEK

T6S--R5W @STEELEVILL, Randolph, IL

Built 1981 Load: 27.2 t ADT: 225

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial