Marshall County, IA

283 public highway bridges

Marshall County Bridge Snapshot

Marshall County, Iowa contains 283 public highway bridges in the FHWA National Bridge Inventory. Roughly 28.3% are rated “Good,” 20.8% “Fair,” 45.2% “Poor,” and 45.2% 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 IA 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.

283
Total Bridges
28.3%
Good
45.2%
Poor
45.2%
Structurally Deficient

Condition Distribution

Good
28.3% (80)
Fair
20.8% (59)
Poor
45.2% (128)
SD
45.2% (128)

All Bridges (283)

SUMMIT ST

Good

Over: STREAM

084182700, Marshall, IA

Built 2012 Load: 32.7 t ADT: 2,348

WB US 30

Good

Over: TIMBER CREEK

3.0 MILES E OF JCT IA 14, Marshall, IA

Built 1995 Load: 34.6 t ADT: 7,300

E18 MARBLE RD

Good

Over: STREAM

085180905, Marshall, IA

Built 2015 Load: 36.3 t ADT: 530

IA 146

Good

Over: DRAINAGE DITCH

2.5 MILES S OF JCT US 30, Marshall, IA

Built 1979 Load: 36.6 t ADT: 2,160

320TH ST

Good

Over: CLEAR CREEK

082202903, Marshall, IA

Built 2017 Load: 37.9 t ADT: 69

E67 (330TH ST)

Good

Over: NORTH SKUNK RIVER

082203601, Marshall, IA

Built 2014 Load: 37.9 t ADT: 20

260TH ST

Good

Over: NORTH TIMBER CREEK

083182402, Marshall, IA

Built 2021 Load: 37.9 t ADT: 176

US 30 EB

Good

Over: OVER UP RR

1.0 MILE W OF JCT SR T31, Marshall, IA

Built 1986 Load: 38.1 t ADT: 7,350

IA 330 SB

Good

Over: NORTH SKUNK RIVER

0.9 MI N OF N JCT SR S52, Marshall, IA

Built 2002 Load: 39.0 t ADT: 4,150

IA 330 SB

Good

Over: NORTH TIMBER CREEK

2.9 MILES S OF JCT US 30, Marshall, IA

Built 1979 Load: 39.7 t ADT: 9,000

PARKER AVE

Good

Over: NORTH TIMBER CREEK

083182202, Marshall, IA

Built 2014 Load: 39.9 t ADT: 104

105TH ST

Good

Over: HONEY CREEK

085190609, Marshall, IA

Built 2016 Load: 39.9 t ADT: 59

155TH ST

Good

Over: MINERVA CREEK

085203503, Marshall, IA

Built 2017 Load: 39.9 t ADT: 30

310TH ST

Good

Over: SNIPE CREEK

082192001, Marshall, IA

Built 2012 Load: 40.2 t ADT: 26

US 30 EB

Good

Over: UPRR

0.5 MILE W OF JCT IA 146, Marshall, IA

Built 2004 Load: 40.6 t ADT: 7,050

US 30 WB

Good

Over: UP RR

1.0 MILE W OF JCT SR T31, Marshall, IA

Built 2001 Load: 40.6 t ADT: 7,350

EB US 30

Good

Over: TIMBER CREEK

3.0 MILES E OF JCT IA 14, Marshall, IA

Built 1996 Load: 40.8 t ADT: 7,300

FM

Good

Over: CLEAR CREEK

082200805, Marshall, IA

Built 2006 Load: 41.7 t ADT: 265

MEMORIAL DR

Good

Over: BRADDY CREEK

IOWA VETERANS HOME, Marshall, IA

Built 1995 Load: 41.7 t

NORTH CENTER ST

Good

Over: IOWA RIVER OVERFLOW

084182604, Marshall, IA

Built 2020 Load: 41.8 t ADT: 737

IA 96

Good

Over: DEVILS RUN CREEK

1.8 MILES EAST OF SR T29, Marshall, IA

Built 2015 Load: 42.1 t ADT: 1,560

FM

Good

Over: HONEY CREEK

085191603, Marshall, IA

Built 2004 Load: 42.5 t ADT: 354

IA 330

Good

Over: IOWA RIVER

1.0 MI N OF N JCT SR E29, Marshall, IA

Built 2001 Load: 43.7 t ADT: 2,790

NEW HIGHLAND AC

Good

Over: LYNN CREEK

083180900, Marshall, IA

Built 2008 Load: 43.7 t ADT: 1,738

IA 330 SB

Good

Over: CLEAR CREEK

1.7 MI S OF S JCT SR S52, Marshall, IA

Built 2002 Load: 44.6 t ADT: 4,150

LOCAL

Good

Over: BRUSH CREEK

082172101, Marshall, IA

Built 2006 Load: 45.3 t ADT: 51

LOCAL

Good

Over: NORTH TIMBER CREEK

083192304, Marshall, IA

Built 1998 Load: 45.3 t ADT: 21

N. 18TH AVE.

Good

Over: LINN CREEK

084173000, Marshall, IA

Built 1990 Load: 45.3 t ADT: 1,783

LOCAL

Good

Over: CLEAR CREEK

083203002, Marshall, IA

Built 1993 Load: 45.4 t ADT: 45

LOCAL

Good

Over: SNIPE CREEK

082171802, Marshall, IA

Built 2003 Load: 45.5 t ADT: 20

LOCAL

Good

Over: SNIPE CREEK

082191402, Marshall, IA

Built 2004 Load: 45.5 t ADT: 5

LOCAL

Good

Over: DAVISONS CREEK

083172301, Marshall, IA

Built 2005 Load: 45.5 t ADT: 30

FM

Good

Over: LINN CREEK

084203302, Marshall, IA

Built 2007 Load: 45.5 t ADT: 147

E29 SUMMIT RD

Good

Over: CREEK

084182902, Marshall, IA

Built 2005 Load: 45.7 t ADT: 717

E18 MARBLE RD

Good

Over: LITTLE ASHER CREEK

085181103, Marshall, IA

Built 2015 Load: 46.7 t ADT: 530

US 30 WB

Good

Over: UPRR

0.5 MILE W OF JCT IA 146, Marshall, IA

Built 2003 Load: 46.9 t ADT: 7,050

FM

Good

Over: MINERVA CREEK

085200904, Marshall, IA

Built 1997 Load: 47.1 t ADT: 147

LOCAL

Good

Over: BURNETT CR

084170502, Marshall, IA

Built 2004 Load: 48.0 t ADT: 35

FM

Good

Over: CREEK

084180801, Marshall, IA

Built 2004 Load: 48.0 t ADT: 108

FM

Good

Over: CREEK

084190305, Marshall, IA

Built 2004 Load: 48.0 t ADT: 59

LOCAL

Good

Over: BR MINERVA CREEK

084191501, Marshall, IA

Built 1992 Load: 48.0 t ADT: 21

FM

Good

Over: BRUSH CREEK

082173401, Marshall, IA

Built 2002 Load: 48.2 t ADT: 442

HIGHLAND ACRES RD

Good

Over: LINN CREEK

083180912, Marshall, IA

Built 2007 Load: 48.4 t ADT: 1,630

LOCAL

Good

Over: MINERVA CR

084201501, Marshall, IA

Built 2006 Load: 49.8 t ADT: 30

LOCAL

Good

Over: LINN CREEK

084203601, Marshall, IA

Built 1999 Load: 49.8 t ADT: 51

FM

Good

Over: ASHER CREEK

085182801, Marshall, IA

Built 2004 Load: 49.8 t ADT: 29

FM

Good

Over: BURNETT CREEK

084170401, Marshall, IA

Built 1994 Load: 50.0 t ADT: 304

FM

Good

Over: MINERVA CREEK

085200906, Marshall, IA

Built 1997 Load: 50.0 t ADT: 147

LOCAL

Good

Over: CREEK

083170405, Marshall, IA

Built 2003 Load: 51.3 t ADT: 59

LOCAL

Good

Over: DRAINAGE

083180903, Marshall, IA

Built 2006 Load: 51.6 t ADT: 340

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