Union County, OH

221 public highway bridges

Union County Bridge Snapshot

Union County, Ohio contains 221 public highway bridges in the FHWA National Bridge Inventory. Roughly 58.8% are rated “Good,” 26.2% “Fair,” 0.9% “Poor,” and 0.9% 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 OH 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.

221
Total Bridges
58.8%
Good
0.9%
Poor
0.9%
Structurally Deficient

Condition Distribution

Good
58.8% (130)
Fair
26.2% (58)
Poor
0.9% (2)
SD
0.9% (2)

All Bridges (221)

US 36

Fair

Over: MILL CREEK

1.3 MI W OF C-113, Union, OH

Built 1950 Load: 31.1 t ADT: 18,155

SR 38

Fair

Over: LITTLE DARBY CREEK

0.22MI N OF MADISONCOLINE, Union, OH

Built 1969 Load: 31.8 t ADT: 3,067

SR 161

Fair

Over: OVER ABAND. CSX RR

2.04 MI W OF US 33, Union, OH

Built 1971 Load: 31.8 t ADT: 4,168

SR-4

Fair

Over: TREACLE CREEK

0.57 MI S. OF SR161, Union, OH

Built 1974 Load: 32.4 t ADT: 4,506

SR 31

Fair

Over: OVER BOKES CREEK

OVER BOKES CREEK, Union, OH

Built 1975 Load: 32.4 t ADT: 5,396

US 33

Fair

Over: FLAT BRANCH (CLOSED)

ABANDONED US 33, Union, OH

Built 1962 Load: 32.4 t ADT: 2

SR 37

Fair

Over: BOKES CREEK

2.14 MI S OF SR 4, Union, OH

Built 1982 Load: 32.4 t ADT: 836

SR 161

Fair

Over: LITTLE DARBY CREEK

2.76 MI E OF CHAMPAIGN, Union, OH

Built 1963 Load: 32.4 t ADT: 1,461

S.R. 245

Fair

Over: E BUCK RUN

2.74 MI W OF US 33, Union, OH

Built 1954 Load: 32.4 t ADT: 2,965

SR 736

Fair

Over: ROBINSON RUN

1.16 MI N OF US42, Union, OH

Built 1971 Load: 32.4 t ADT: 2,048

TR 540A CORP BLVD

Fair

Over: KILE DITCH

0.17 MI E OF INDUST PKWY, Union, OH

Built 2000 Load: 32.4 t ADT: 719

C21 LAFAYET PL CTY

Fair

Over: BRANCH BIG DARBY

0.7 MI SOUTH of SR161, Union, OH

Built 1930 Load: 32.4 t ADT: 809

TR 70 A BOERGER RD

Fair

Over: BRANCH BUCK RUN

0.8 MI EAST of SR 4, Union, OH

Built 1930 Load: 32.4 t ADT: 327

C107F SPRINGDALE

Fair

Over: BLUES CREEK

1.3 MI NORTH of SR 36, Union, OH

Built 1988 Load: 32.4 t ADT: 257

C107A SPRINGDALE

Fair

Over: DUNS RUN BRANCH MILL CRK

1.2 MI SOUTH of SR 36, Union, OH

Built 1930 Load: 32.4 t ADT: 257

C93C SMART-COLE RD

Fair

Over: POUNDS DITCH

1.3 MI NORTH OF SR42, Union, OH

Built 1998 Load: 32.4 t ADT: 383

C134F PAVER BARNES

Fair

Over: OTTER RUN

2.2 MI N. of NORTHWEST PK, Union, OH

Built 1930 Load: 32.4 t ADT: 298

C136D DOG LEG RD

Fair

Over: OTTER RUN

2.4 MI NORTH of RAYMOND R, Union, OH

Built 1972 Load: 32.4 t ADT: 143

TR146A BUCK RUN RD

Fair

Over: BIG DARBY

0.25MI N of MIDDLEB-PC RD, Union, OH

Built 2007 Load: 32.4 t ADT: 806

C213B FORD REED RD

Fair

Over: BOKES CREEK

1.018 MI. NORTH OF SR347, Union, OH

Built 2003 Load: 32.4 t ADT: 446

C262F KINNEY PIKE

Fair

Over: FULTON CREEK

1.5 MI. N OF CR 200, Union, OH

Built 1990 Load: 32.4 t ADT: 295

C289B PWDR LICK RD

Fair

Over: POWDER LICK CREEK

1.25 MI EAST of SR739, Union, OH

Built 1974 Load: 32.4 t ADT: 384

CR292B JANUARY RD

Fair

Over: BRANCH BOKES CREEK

0.47 MI. NORTH SR 47, Union, OH

Built 1974 Load: 32.4 t ADT: 80

C163B INSKEEP-CRTY

Fair

Over: BRANCH OF BIG DARBY

0.5 MI NORTH of SR 245, Union, OH

Built 1972 Load: 32.4 t ADT: 430

C149A BEAR SWAMP

Fair

Over: BRANCH OF BUCK RUN

0.3 MI SOUTH OF CR 133, Union, OH

Built 1920 Load: 32.4 t ADT: 316

CR222 C YEARS

Fair

Over: BRUSH RUN

2.5 MI NORTH of SR347, Union, OH

Built 1971 Load: 32.4 t ADT: 451

USR 42

Fair

Over: ROBINSON RUN

0.32 MI N OF SR 735, Union, OH

Built 1982 Load: 33.7 t ADT: 8,156

SR 4

Fair

Over: OTTAWA CREEK

2.22 MI. N. OF SR37, Union, OH

Built 1970 Load: 34.3 t ADT: 4,817

CR113D WHITESTONE

Fair

Over: BLUES CREEK

0.25MI N of LEEPER-PERKIN, Union, OH

Built 2000 Load: 35.6 t ADT: 460

US 33

Fair

Over: FLAT BRANCH

0.43 MI S OF SR739, Union, OH

Built 1987 Load: 37.9 t ADT: 15,485

S.R. 245

Fair

Over: W BUCK RUN

4.05 MI W OF US 33, Union, OH

Built 1956 Load: 38.9 t ADT: 2,965

C135A DOVER-COUNTY

Fair

Over: DUNS RUN BRANCH MILL CRK

1.5 MI EAST of SR 36, Union, OH

Built 1976 Load: 39.5 t ADT: 160

CR23A CONVERSE RD

Fair

Over: BIG DARBY

0.3 MI EAST of PLAIN CITY, Union, OH

Built 1983 Load: 42.1 t ADT: 431

US 33

Fair

Over: FLAT BRANCH

0.43MI S OF SR739, Union, OH

Built 1987 Load: 44.4 t ADT: 15,485

C87A AXE HANDLE RD

Fair

Over: LITTLE DARBY

0.04 MI N of SR161, Union, OH

Built 1870 Load: 45.4 t ADT: 320

CR 264 A TAWA RD

Fair

Over: OTTAWA CREEK

0.75 MI WEST of SR 4, Union, OH

Built 1971 Load: 45.4 t ADT: 285

US 42

Fair

Over: SUGAR RUN CREEK

1.2 MI S. OF OLD US33, Union, OH

Built 1985 Load: 54.4 t ADT: 8,156

C46B HAGENDERFER

Fair

Over: ROBINSON RUN

0.5 MI SW of SR 736, Union, OH

Built 1974 Load: 77.8 t ADT: 318

CR343A YOAKUM RD

Fair

Over: RUSH CREEK

1.3MI E of SR31, Union, OH

Built 1969 Load: 77.8 t ADT: 132

C129E WOLFORD MASK

Good

Over: BLUES CREEK

1.5 MI SOUTH of SR 347, Union, OH

Built 1969 Load: 13.0 t ADT: 1,102

USR 36

Good

Over: OVER DUN RUN

1.5MI.WEST OF DEL.CO.LINE, Union, OH

Built 1994 Load: 19.4 t ADT: 5,681

CR 81 CONNER RD

Good

Over: FARRINGTON DITCH

1.5 MI WEST of SR 4, Union, OH

Built 1970 Load: 19.4 t ADT: 160

CR 33 F TAYLOR RD

Good

Over: SUGAR RUN

0.5 MI W. of INDUSTRIAL P, Union, OH

Built 1974 Load: 19.4 t ADT: 1,084

C236A COTTON SLASH

Good

Over: MILL CREEK

2 MI SW of SR 31, Union, OH

Built 1997 Load: 19.4 t ADT: 650

C191I RAYMOND RD

Good

Over: OTTER RUN

2 MI NORTH of MARYSVILLE, Union, OH

Built 1979 Load: 19.4 t ADT: 1,367

SR 736

Good

Over: ROBINSON RUN

0.62 MI N OF US42, Union, OH

Built 1964 Load: 25.6 t ADT: 2,100

SR 31

Good

Over: RUSH CREEK

0.02 MI. S. HARDIN CO LIN, Union, OH

Built 2006 Load: 25.9 t ADT: 4,868

C310 HOOVER-MOFFIT

Good

Over: BOKES CREEK

0.7 MI NORTH of SR 47, Union, OH

Built 2009 Load: 25.9 t ADT: 399

C196B MACKLIN RD

Good

Over: BLUES CREEK

0.1 MI WEST of SR 4, Union, OH

Built 1970 Load: 25.9 t ADT: 126

C199E SANDUSKY RD

Good

Over: BOKES CREEK

0.85 MI NORTH OF SR 347, Union, OH

Built 1999 Load: 29.2 t ADT: 403

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