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)

Sort:

SR-4

Over: UNDER SR-4

.33 MI EAST SR31, Union, OH

Built 1967 ADT: 45,600

SR 31

Over: UNDER SR-31

.33 MI WEST OF SR4, Union, OH

Built 1967 ADT: 45,600

SR 739

Over: SR-739 (STOKES ROAD)

AT US-33, Union, OH

Built 1987 ADT: 30,970

DARBY-POTTRSBRG RD

Over: UNDER HOLYCROSS-EPPS C15

1.47 MI N OF SR739, Union, OH

Built 1988 ADT: 32,302

US 33

Over: US33

OVER NW PKWY, Union, OH

Built 1966 ADT: 11,328

HOLYCROSS-EPPS RD

Over: UNDER HOLYCROSS-EPPS RD

3.05 MI N OF SR739, Union, OH

Built 1988 ADT: 34,241

US 33

Over: US33

OVER NW PKWY, Union, OH

Built 1966 ADT: 11,328

POLING RD (TR 151)

Over: UNDER POLING ROAD (TR151

4.25 MI N OF SR739, Union, OH

Built 1987 ADT: 34,241

US 33

Over: US33

3.48 MI N OF SR739, Union, OH

Built 1987 ADT: 316

US 33

Over: US33

3.48 MI N. OF SR739, Union, OH

Built 1987 ADT: 316

US 33

Over: UNDER US 33-0893L

0.92 MI N OF SR245, Union, OH

Built 1966 ADT: 2,520

US 33

Over: UNDER US 33-0893R

0.92 MI N. OF SR245, Union, OH

Built 1966 ADT: 2,520

US 33

Over: US33

5.3 MI N OF SR739, Union, OH

Built 1987 ADT: 292

US 33

Over: US33

5.13 MI N OF SR739, Union, OH

Built 1987 ADT: 292

US 33

Over: US 33

1.01 MI N OF SR4, Union, OH

Built 1966 ADT: 1,654

USR 33

Over: US33

7.05 MI N OF SR739, Union, OH

Built 1988 ADT: 4,959

USR 33

Over: US33

7.05 MI N. OF SR739, Union, OH

Built 1988 ADT: 4,959

US 33

Over: US 33

1.01 MI N OF SR4, Union, OH

Built 1966 ADT: 1,654

US 33

Over: UNDER US33-1219L

OVER US36, Union, OH

Built 1966 ADT: 2,921

US 33

Over: UNDER US33-1219R

OVER US36, Union, OH

Built 1966 ADT: 2,921

U.S.. 36

Over: RAMP (US33 TO US36 & SR4

0.1 MI N OF US 36, Union, OH

Built 1988 ADT: 32,567

USR 33

Over: RAMP (US33 TO US36 & SR4

0.1 MI N. OF US36, Union, OH

Built 1988 ADT: 32,567

USR 33

Over: US33 RAMP

SR 245 INTERSECTION, Union, OH

Built 1988 ADT: 4,959

US 33

Over: US33 RAMP

OVER C-133, Union, OH

Built 1988 ADT: 3,475

CR 105

Over: UNDER SCOTTSLAWN (C-105)

2.84 MI N OF US36, Union, OH

Built 1967 ADT: 45,912

CR 36

Over: UNDER CR 36

5.98 MI N OF US36, Union, OH

Built 1968 ADT: 42,851

CR 16

Over: UNDER CR 16

0.83 MI S OF US42, Union, OH

Built 1967 ADT: 51,296

CR 9

Over: UNDER CR 9

1.92 MI S OF US42, Union, OH

Built 1967 ADT: 51,296

US 33

Over: US-33

AT JCT. OF SR161, Union, OH

Built 1967 ADT: 10,724

US 33

Over: US-33

AT JCT. OF SR161, Union, OH

Built 1967 ADT: 10,724

US 42

Over: UNDER US-42

0.4 MI N. OF OLD US 33, Union, OH

Built 1968 ADT: 48,807

CR 114 A WALDO RD

Over: TRIBUTARY TO MILLCREEK

2 MI S of COUNT HOME RD, Union, OH

Built 1980 Load: 16.2 t ADT: 1,654

CR 33 B TAYLOR RD

Over: ROBINSON RUN

0.5 MI S of INDUST PKWY, Union, OH

Built 1973 Load: 19.4 t ADT: 574

C311B TREATY LINE

Over: BOKES CREEK

3.1 MI WEST of SR 31, Union, OH

Built 1975 Load: 19.4 t ADT: 441

TR 69 B ORCHARD RD

Over: BUCK RUN

0.1 MI WEST of SR 38, Union, OH

Built 1972 Load: 19.4 t ADT: 454

CR 78 D COLLINS RD

Over: BUCK RUN

2.5 MI WEST of SR 36, Union, OH

Built 1977 Load: 19.4 t ADT: 931

C200D BEHLEHM-CLAI

Over: FULTON CREEK

0.13 MI WEST of SR 37, Union, OH

Built 1971 Load: 19.4 t ADT: 253

C163B INSKEEP-CRTY

Over: SPAIN CREEK

0.05 MI NORTH of SR 245, Union, OH

Built 1870 Load: 19.4 t ADT: 430

C129D WOLFRD MSKIL

Over: BLUES CREEK

2.7 MI NORTH of SR 4, Union, OH

Built 1976 Load: 19.4 t ADT: 1,102

SR 739

Over: RUSH CREEK

3.31 MI N OF SR31, Union, OH

Built 1964 Load: 22.4 t ADT: 1,123

TR82 WINGET RD

Over: TREACLE CREEK

0.3MI E of HOMER RD, Union, OH

Built 1900 Load: 22.7 t ADT: 324

SR 736

Over: ROBINSON RUN

1.99 MI N OF US42, Union, OH

Built 1971 Load: 24.9 t ADT: 2,048

SR 47

Over: BOKES CREEK

1.99 MI E. OF SR739, Union, OH

Built 1960 Load: 25.3 t ADT: 939

SR 37

Over: RUSH CREEK

0.16 MI N OF SR739, Union, OH

Built 1955 Load: 25.9 t ADT: 1,605

S.R. 739

Over: ARTHUR BRANCH RUN

2.35 N OF US33, Union, OH

Built 1964 Load: 25.9 t ADT: 7,842

CR 193 D KAISER RD

Over: DUNS RUN BRANCH BLUES CR

2 MI EAST of SR 4, Union, OH

Built 1972 Load: 25.9 t ADT: 188

SR 47

Over: BRAUCK CREEK

3.3 MI W OF SR739, Union, OH

Built 1957 Load: 26.2 t ADT: 717

USR 36

Over: TREACLE CREEK

1.08 MI E OF SR4, Union, OH

Built 1966 Load: 29.2 t ADT: 4,977

S.R. 38

Over: BIG DARBY CREEK

2.92 MI N. OF SR161, Union, OH

Built 1963 Load: 29.2 t ADT: 1,170

C36B BEECHER-GMBL

Over: BRANCH OF MILL CREEK

0.1 MI SOUTH OF CR 104, Union, OH

Built 1998 Load: 29.2 t ADT: 204

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026