Mercer County, OH

329 public highway bridges

Mercer County Bridge Snapshot

Mercer County, Ohio contains 329 public highway bridges in the FHWA National Bridge Inventory. Roughly 41.3% are rated “Good,” 55.9% “Fair,” 2.7% “Poor,” and 2.7% 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.

329
Total Bridges
41.3%
Good
2.7%
Poor
2.7%
Structurally Deficient

Condition Distribution

Good
41.3% (136)
Fair
55.9% (184)
Poor
2.7% (9)
SD
2.7% (9)

All Bridges (329)

SCHROEDER ROAD

Good

Over: CRAB BRANCH

0.1 MI W WABASH ROAD, Mercer, OH

Built 2012 Load: 48.6 t ADT: 69

US. 127

Good

Over: TWELVE MILE CREEK

1.9MI S. OF JCT US33, Mercer, OH

Built 2009 Load: 48.9 t ADT: 3,665

RAUH RD

Good

Over: CRAB BRANCH

0.1 MI N ST ANTHONY RD, Mercer, OH

Built 2023 Load: 49.2 t ADT: 351

FOX RD

Good

Over: Branch of Fort Creek

1.08 mi. E. of stateline, Mercer, OH

Built 2014 Load: 51.8 t ADT: 238

OREGON ROAD

Good

Over: TWELVE MILE CREEK

0.1 MI W WEITZ ROAD, Mercer, OH

Built 2019 Load: 51.8 t ADT: 240

Wabash Rd

Good

Over: MC DOWELL RUN

0.5 MI N PHILOTHEA ROAD, Mercer, OH

Built 2017 Load: 51.8 t ADT: 984

SR-49

Good

Over: DUCK CREEK DITCH #75-84

1.4MI. N. OF JCT. SR-707, Mercer, OH

Built 1998 Load: 52.5 t ADT: 941

TOWNSHIPLINE T61

Good

Over: LITTLE BLACK CREEK

0.44 MI S OF SR707, Mercer, OH

Built 2007 Load: 55.1 t ADT: 143

Philothea

Good

Over: BURNTWOOD CREEK

0.3 MI W COLDWATER CR RD, Mercer, OH

Built 2016 Load: 55.1 t ADT: 364

NEPTUNE MENDON RD

Good

Over: EIGHT MILE CREEK

0.1 MI N BOGART, Mercer, OH

Built 2012 Load: 55.1 t ADT: 133

HOENIE ROAD

Good

Over: TWELVE MILE CREEK

0.3 MI S OREGON ROAD, Mercer, OH

Built 2012 Load: 55.1 t ADT: 315

SR-219

Good

Over: LITTLE CHICKASAW CREEK

.04MI.W.OF AUGLAIZE CO., Mercer, OH

Built 2010 Load: 57.0 t ADT: 1,425

WILSON ROAD

Good

Over: LITTLE BLACKCREEK

0.1 MI E ERASTUS DURDIN, Mercer, OH

Built 2013 Load: 58.3 t ADT: 139

C80A CLOVER FOUR

Good

Over: BEAVER CREEK

0.83 MI E OF US127, Mercer, OH

Built 2010 Load: 58.3 t ADT: 887

WINKLER ROAD

Good

Over: LITTLE BLACKCREEK

0.4 MI W JORDAN ROAD, Mercer, OH

Built 2013 Load: 64.8 t ADT: 94

SR-49

Good

Over: DUCK CREEK

1.78 MI.S.VAN WERT CO.LN, Mercer, OH

Built 2007 Load: 65.4 t ADT: 941

SR-49

Good

Over: DUCK CREEK

1.52 MI.S.VAN WERT CO. LN, Mercer, OH

Built 2007 Load: 65.8 t ADT: 941

SR29

Good

Over: SHERMAN DITCH

.47 MI. E. OF IN. ST LINE, Mercer, OH

Built 2008 Load: 69.3 t ADT: 1,899

WINKLER RD

Good

Over: DUCKCREEK

0.2 MI E ST RT 49, Mercer, OH

Built 2018 Load: 71.3 t ADT: 406

WAYNE ST.

Good

Over: WABASH RIVER

0.1 MI NORTH S.R. 49, Mercer, OH

Built 2001 Load: 77.8 t ADT: 1,357

PALMER ROAD

Poor

Over: ST MARYS RIVER

N OF SR707 0.8 MI, Mercer, OH

Built 1994 Load: 12.7 t ADT: 220

SIEGRIST JUTTE RD

Poor

Over: WABASH RIVER

0.2 MI E ST RT 49, Mercer, OH

Built 1987 Load: 12.7 t ADT: 1,194

JOHNSTON ROAD

Poor

Over: STREAM

0.1 MI S COLDWATER CREEK, Mercer, OH

Built 1990 Load: 25.9 t ADT: 210

ROCKFORD WEST ROAD

Poor

Over: BIG BLACKCREEK

0.1 MI E WABASH ROAD, Mercer, OH

Built 1985 Load: 32.4 t ADT: 272

SHARPSBURG ROAD

Poor

Over: BRANCH OF WABASH RIVER

1/2 MI NW OF SHARPSBURG, Mercer, OH

Built 1965 Load: 32.4 t ADT: 723

WABASH ROAD

Poor

Over: BIG BLACK CREEK

0.2 MI S OREGON ROAD, Mercer, OH

Built 1967 Load: 32.4 t ADT: 70

HUWER ROAD

Poor

Over: BR OF MILE CREEK

E OF US 127 1.1 MI, Mercer, OH

Built 1993 Load: 32.4 t ADT: 235

OLDING ROAD

Poor

Over: BEAVER CREEK

0.2 MI E US 127, Mercer, OH

Built 1979 Load: 32.4 t ADT: 267

ERASTUS DURBIN RD

Poor

Over: BIG RUN

0.6 MI S PINE ROAD, Mercer, OH

Built 1911 Load: 55.1 t ADT: 172

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