Marshall County, IL

153 public highway bridges

Marshall County Bridge Snapshot

Marshall County, Illinois contains 153 public highway bridges in the FHWA National Bridge Inventory. Roughly 43.1% are rated “Good,” 39.2% “Fair,” 11.1% “Poor,” and 11.1% 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.

153
Total Bridges
43.1%
Good
11.1%
Poor
11.1%
Structurally Deficient

Condition Distribution

Good
43.1% (66)
Fair
39.2% (60)
Poor
11.1% (17)
SD
11.1% (17)

All Bridges (153)

TR 134 (TH-S53)

Structurally Deficient

Over: JUDD CREEK

T30N-R1E-3PM SEC 20, Marshall, IL

Built 1974 Load: 32.7 t ADT: 50

ELM STREET

Structurally Deficient

Over: GIMLET CREEK

VILLAGE OF SPARLAND, Marshall, IL

Built 1982 Load: 36.3 t ADT: 150

TR 34 (TH-S14)

Structurally Deficient

Over: CREEK

T12N-R9E-4PM SEC 3, Marshall, IL

Built 1974 Load: 89.1 t ADT: 75

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