Iron County, MO

129 public highway bridges

Iron County Bridge Snapshot

Iron County, Missouri contains 129 public highway bridges in the FHWA National Bridge Inventory. Roughly 30.2% are rated “Good,” 59.7% “Fair,” 9.3% “Poor,” and 9.3% 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 MO 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.

129
Total Bridges
30.2%
Good
9.3%
Poor
9.3%
Structurally Deficient

Condition Distribution

Good
30.2% (39)
Fair
59.7% (77)
Poor
9.3% (12)
SD
9.3% (12)

All Bridges (129)

RT BB E

Good

Over: BRUSHY CR

S 1 T 30 N R 3 E, Iron, MO

Built 1962 Load: 37.8 t ADT: 268

UPPER DETMER RD

Good

Over: MARBLE CR

S 34 T 33 N R 4 E, Iron, MO

Built 2017 Load: 40.5 t ADT: 50

RT N N

Good

Over: UP RR

S 12 T 34 N R 3 E, Iron, MO

Built 2007 Load: 42.3 t ADT: 3,309

MO 72 E

Good

Over: STOUTS CR

S 3 T 33 N R 4 E, Iron, MO

Built 2019 Load: 42.3 t ADT: 1,719

MO 72 E

Good

Over: BR OF STOUTS CR

S 36 T 33 N R 4 E, Iron, MO

Built 1930 Load: 42.3 t ADT: 1,719

MO 49 S

Good

Over: BIG CR

S 23 T 31 N R 3 E, Iron, MO

Built 2018 Load: 43.2 t ADT: 1,120

MO 21 S

Good

Over: CARVER CR

S 4 T 32 N R 3 E, Iron, MO

Built 2018 Load: 46.8 t ADT: 876

MORNING SIDE LN

Good

Over: BR OF STROUTS CR

S 25 T 34 N R 3 E, Iron, MO

Built 2019 Load: 46.8 t ADT: 35

MO 72 E

Good

Over: MARTIN BR

S 3 T 33 N R 4 E, Iron, MO

Built 1928 Load: 46.8 t ADT: 1,719

MO 49 S

Good

Over: SUTTON BR

S 36 T 31 N R 3 E, Iron, MO

Built 1924 Load: 49.5 t ADT: 1,120

RT E E

Good

Over: MARBLE CR

S 3 T 32 N R 4 E, Iron, MO

Built 1976 Load: 50.4 t ADT: 1,193

CEMETERY RD

Good

Over: BR OF WILDCAT CR

S 8 T 30 N R 4 E, Iron, MO

Built 2016 Load: 51.3 t ADT: 100

MO 49 S

Good

Over: GOFF BR

S 2 T 32 N R 3 E, Iron, MO

Built 1986 Load: 54.0 t ADT: 1,311

MO 21 S

Good

Over: CLAYBAUGH CR

S 14 T 33 N R 3 E, Iron, MO

Built 1985 Load: 57.6 t ADT: 3,562

RT N S

Good

Over: MILLS CR

S 36 T 34 N R 2 E, Iron, MO

Built 1976 Load: 64.8 t ADT: 1,290

BARRELL LOTZ RD

Good

Over: BR OF BIG CR

S 16 T 31 N R 3 E, Iron, MO

Built 2004 Load: 76.5 t ADT: 30

RT E E

Good

Over: BR MARBLE CR

S 15 T 32 N R 4 E, Iron, MO

Built 1978 Load: 99.0 t ADT: 1,193

RA RD

Poor

Over: CREEK

S 9 T 34 N R 3 E, Iron, MO

Built 1935 Load: 5.4 t ADT: 75

MO 32 E

Poor

Over: RICHARDSON CR

S 218 T 35 N R 2 E, Iron, MO

Built 1922 Load: 8.1 t ADT: 980

THOMPSON RD

Poor

Over: CREEK

S 5 T 33 N R 4 E, Iron, MO

Built 1930 Load: 9.0 t ADT: 800

RT E E

Poor

Over: MARBLE CR

S 10 T 32 N R 4 E, Iron, MO

Built 1936 Load: 9.0 t ADT: 1,193

ST MARYS RD

Poor

Over: BR OF STOUTS CR

S 33 T 34 N R 4 E, Iron, MO

Built 1980 Load: 11.7 t ADT: 35

BANNER RD

Poor

Over: REID CR

S 1 T 34 N R 2 E, Iron, MO

Built 1950 Load: 12.6 t ADT: 100

MO 49 S

Poor

Over: UP RR

S 25 T 31 N R 3 E, Iron, MO

Built 1927 Load: 14.4 t ADT: 1,120

SERVICE ROAD

Poor

Over: COUNCIL BLUFF LAKE

COUNCIL BLUFF LAKE INTAKE, Iron, MO

Built 1978 Load: 16.2 t ADT: 5

MO 49 S

Poor

Over: BR

S 1 T 30 N R 3 E, Iron, MO

Built 1924 Load: 17.1 t ADT: 1,120

RT U E

Poor

Over: BR E FK CEDAR CR

S 4 T 34 N R 3 E, Iron, MO

Built 1922 Load: 27.0 t ADT: 698

ADAMS HOLLOW -154

Poor

Over: CREEK

S 1 T 30 N R 3 E, Iron, MO

Built 1930 Load: 99.9 t ADT: 35

N MAIN ST

Structurally Deficient

Over: KNOB CR

S 31 T 34 N R 4 E, Iron, MO

Built 1972 ADT: 200

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

Related

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