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)

Sort:

GALLMAN RD

Over: ST MARYS RIVER

0.5 MI. N. OF MERCER ROAD, Mercer, OH

Built 2001 Load: 32.4 t ADT: 213

STATE LINE RD

Over: LIMBERLOST CREEK

.7 MILES S OF CR 200N, Mercer, OH

Built 1995 Load: 32.7 t ADT: 74

FLEETFOOT ROAD

Over: COLDWATER CREEK

0.3 MI N YOUNGER ROAD, Mercer, OH

Built 1981 Load: 35.6 t ADT: 241

PINE ROAD

Over: WABASH RIVER

0.4 MI WEST BURRVILLE RD, Mercer, OH

Built 1999 Load: 35.6 t ADT: 324

PINE ROAD

Over: BIG RUN

0.1 MI W TOWNSHIP LINE RD, Mercer, OH

Built 1999 Load: 35.6 t ADT: 324

IND STATE LINE RD

Over: SCHERMAN DITCH

.1 MI NORTH PINE ROAD, Mercer, OH

Built 1995 Load: 35.6 t ADT: 144

MENCHHOFER ROAD

Over: WABASH RIVER

JUST WEST OF ST PETER RD, Mercer, OH

Built 1997 Load: 35.6 t ADT: 244

ERASTUS DURBIN RD

Over: KITTLE DITCH

0.1 MI S ST. RT. 29, Mercer, OH

Built 1980 Load: 35.6 t ADT: 342

BURRVILLE ROAD

Over: TOTI CREEK

0.2 MI S ST. RT. 219, Mercer, OH

Built 1984 Load: 35.6 t ADT: 179

C-703A

Over: SPILLWAY AT GRAND LAKE

.5 MI NORTH MONROE RD, Mercer, OH

Built 1997 Load: 37.3 t ADT: 330

GAUSE ROAD

Over: LITTLE BEAVER CREEK

0.1 MI. N. SWAMP ROAD, Mercer, OH

Built 2003 Load: 38.9 t ADT: 185

MERCER VAN WERT RD

Over: KYLE PRAIRIE CREEK

0.1 MI W DUTTON RD, Mercer, OH

Built 1980 Load: 38.9 t ADT: 200

MERCER VAN WERT RD

Over: LITTLE AUGLAIZE RIVER

0.5 MI W TOMLINSON RD, Mercer, OH

Built 1986 Load: 38.9 t ADT: 200

ERASTUS DURBIN RD

Over: TOTI CREEK

0.3 MI S ST. RT. 219, Mercer, OH

Built 1984 Load: 38.9 t ADT: 351

SIEGRIST JUTTE RD

Over: BRANCH OF TOTI CREEK

0.2 MI E BURRVILLE ROAD, Mercer, OH

Built 1984 Load: 38.9 t ADT: 177

LAKE SHORE DRIVE

Over: PULLMAN BAY

0.3 MI S OF E MARKET ST, Mercer, OH

Built 1990 Load: 42.4 t ADT: 5,201

SR-219

Over: COLDWATER CREEK

.52 MI.E. OF SR-118, Mercer, OH

Built 1928 Load: 45.4 t ADT: 5,813

C10 WATKINS RD

Over: WARD DITCH

0.75 MI E OF SR 118, Mercer, OH

Built 1900 Load: 45.4 t ADT: 316

FRANK ROAD

Over: DUCKCREEK

0.3 MI W ST RT 49, Mercer, OH

Built 1960 Load: 74.5 t ADT: 324

HELLWARTH ROAD

Over: TWELVE MILE CREEK

0.1 MI N MORROW ROAD, Mercer, OH

Built 1970 Load: 74.5 t ADT: 220

STOSE ROAD

Over: GREEN DITCH

0.2 MI. NORTH MORROW RD., Mercer, OH

Built 2000 Load: 77.8 t ADT: 117

C60 CARTHAGENA RD

Over: COLDWATER CREEK

0.16 MI E OF US118, Mercer, OH

Built 1900 Load: 77.8 t ADT: 1,210

CARTHAGENA ROAD

Over: BURNTWOOD CREEK

1.8 MI W OF US 127, Mercer, OH

Built 2013 Load: 77.8 t ADT: 1,210

WATKINS ROAD

Over: BRAANCH OF WABASH RIVER

0.6 MI. E. TOWNSHIP LINE, Mercer, OH

Built 2000 Load: 77.8 t ADT: 215

MUD PIKE

Over: BEAVER CREEK

0.4 MI E WABASH ROAD, Mercer, OH

Built 1988 Load: 77.8 t ADT: 351

ROSS RD

Over: KYLE PRAIRIE CREEK

E OF TOMLINSON RD 0.4 MI, Mercer, OH

Built 1991 Load: 77.8 t ADT: 324

MERCER ROAD

Over: BR TWELVE MILE CR

W OF CEL MEN RD 0.1 MI, Mercer, OH

Built 1994 Load: 77.8 t ADT: 187

GALLMAN RD

Over: BR OF ST MARYS RIVER

S OF DEEP CUT RD 0.1 MI, Mercer, OH

Built 1992 Load: 77.8 t ADT: 213

SIEGRIST JUTTE RD

Over: BRANCH OF TOTI CREEK

0.3 MI E BURRVILLE ROAD, Mercer, OH

Built 1987 Load: 77.8 t ADT: 177

SIEGRIST JUTTE RD

Over: LIMBERLOST CREEK

0.1 MI. E. OHIO-IND LINE, Mercer, OH

Built 2001 Load: 77.8 t ADT: 1,194

SCHROEDER ROAD

Over: SCHERMAN DITCH

0.5 MI W ST RT 49, Mercer, OH

Built 1987 Load: 77.8 t ADT: 351

PINE ROAD

Over: CRAB BRANCH

0.3 MI WEST OF WABASH RD, Mercer, OH

Built 2000 Load: 77.8 t ADT: 351

STATE LINE ROAD

Over: SCHERMAN DITCH

1.5 MILES SOUTH OF SR 67, Mercer, OH

Built 1992 Load: 77.8 t ADT: 144

RAUH ROAD

Over: CRAB BRANCH

0.6 MI S PINE ROAD, Mercer, OH

Built 2004 Load: 77.8 t ADT: 351

SR-219

Over: CHICKASAW CREEK

.97MI.W.OF AUGLAIZE CO., Mercer, OH

Built 1959 Load: 16.2 t ADT: 1,425

SR49

Over: SHERMAN DITCH

.85 MI. N. OF JCT. SR29, Mercer, OH

Built 1956 Load: 19.4 t ADT: 1,327

T130 SCHROEDER

Over: WABASH RIVER

0.5 MI. EAST OF WABASH RD, Mercer, OH

Built 2006 Load: 19.4 t ADT: 324

SR-274

Over: BRANCH BEAVER CREEK

.29MI.E.OF JCT. USR-127, Mercer, OH

Built 1960 Load: 22.4 t ADT: 3,937

SR119

Over: BRANCH OF WABASH RIVER

.81 MI. E. OF IND. ST.LN., Mercer, OH

Built 1956 Load: 22.7 t ADT: 3,385

SR-707

Over: BIG BLACK CREEK

2.08MI.E.OF JCT. SR-49, Mercer, OH

Built 1961 Load: 22.7 t ADT: 845

CR 31A WABASH RD

Over: WABASH RIVER

0.9 MI. N. OF SR29, Mercer, OH

Built 2006 Load: 22.7 t ADT: 70

SR-707

Over: LITTLE BLACK CREEK

2.45MI.W.OF JCT. SR-118, Mercer, OH

Built 1961 Load: 24.0 t ADT: 845

SR-707

Over: ST. MARYS RIVER

2.78MI.S.OF JCT. SR-117, Mercer, OH

Built 1953 Load: 24.0 t ADT: 566

SR-117

Over: TOWN RUN CREEK

1.81MI. E. OF JCT. SR-118, Mercer, OH

Built 1961 Load: 24.3 t ADT: 96

SR 219

Over: CHANNEL GRAND LAKE

.32M W.OF TR165 HARRISON, Mercer, OH

Built 1989 Load: 24.3 t ADT: 1,425

SR119

Over: WABASH RIVER

1 MI. E. OF JCT. SR49, Mercer, OH

Built 1963 Load: 24.6 t ADT: 2,639

SR119

Over: STONEY CREEK

.53 MI. E. OF IND. ST.LN., Mercer, OH

Built 1956 Load: 25.6 t ADT: 2,605

USR-127

Over: COLDWATER CREEK

1.27MI.N.OF JCT. SR-703, Mercer, OH

Built 1950 Load: 25.6 t ADT: 9,115

SR49

Over: TWO MILE CREEK

2.17 MI. N. OF DARKE CO., Mercer, OH

Built 1951 Load: 25.9 t ADT: 1,473

SR49

Over: WABASH RIVER

.99 MI. N. OF JCT. SR29, Mercer, OH

Built 1956 Load: 25.9 t ADT: 1,327

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