Seneca County, OH

275 public highway bridges

Seneca County Bridge Snapshot

Seneca County, Ohio contains 275 public highway bridges in the FHWA National Bridge Inventory. Roughly 72.7% are rated “Good,” 25.8% “Fair,” 1.5% “Poor,” and 1.5% 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.

275

Total Bridges

72.7%

Good

1.5%

Poor

1.5%

Structurally Deficient

Condition Distribution

Good

72.7% (200)

Fair

25.8% (71)

Poor

1.5% (4)

SD

1.5% (4)

All Bridges (275)

Sort:

EDE CR 16

Over: ROCK CREEK

.45 MI WEST OF TR 159, Seneca, OH

Built 2018 Load: 55.1 t ADT: 579

EDE TR 165

Over: ROCK CREEK EDE

0.078 MI S OF CR 16, Seneca, OH

Built 2003 Load: 55.1 t ADT: 579

PLE TR 138

Over: Spicer Creek

PLE Twp .25 Mi E TR 155, Seneca, OH

Built 2017 Load: 55.1 t ADT: 39

CR43

Over: Rock Creek

SCI CR43, Seneca, OH

Built 2020 Load: 55.1 t ADT: 400

SCI TR 181

Over: ARMSTRONG DITCH

.34 MI S OF SR 162, Seneca, OH

Built 2000 Load: 55.7 t ADT: 64

PLE CR 42

Over: EAST BRANCH OF WOLF CREE

0.43 MILES WEST OF SR 53, Seneca, OH

Built 2010 Load: 56.4 t ADT: 666

VEN CR 56

Over: HONEY CREEK

.35 MI E OF CR 23, Seneca, OH

Built 1974 Load: 58.3 t ADT: 277

EDE TR 58

Over: HONEY CREEK

.25 MI W OF CR12, Seneca, OH

Built 1997 Load: 58.6 t ADT: 76

SUMMIT STREET

Over: SUMMIT ST. AND ROCK CREE

W. SIDE HEDGES-BOYER PARK, Seneca, OH

Built 2009 Load: 58.6 t ADT: 1,698

ADA TR 138

Over: Westerhouse Ditch

650 ft. East of TR 190, Seneca, OH

Built 2016 Load: 59.6 t ADT: 400

HOP TR 119

Over: EAST BR WOLF CREEK

.21 MI S OF CR 591, Seneca, OH

Built 1967 Load: 59.6 t ADT: 797

USR 224

Over: EBR WOLF CR MIDDLE BR

1.2 MI W JCT SR18 & US224, Seneca, OH

Built 2004 Load: 61.6 t ADT: 5,384

SR 590

Over: WOLF CREEK

1/4 MI N OF SR 12, Seneca, OH

Built 2002 Load: 61.6 t ADT: 1,247

PLE TR 169

Over: Green Creek

.49 Miles S of CR34, Seneca, OH

Built 2019 Load: 61.6 t ADT: 152

LOU TR 87

Over: SEAVER DITCH

.15 MI S OF SR 18, Seneca, OH

Built 1938 Load: 62.9 t ADT: 155

CLI CR 38

Over: SPICER CREEK

.38 MI W OF CR 15, Seneca, OH

Built 1995 Load: 64.8 t ADT: 1,411

SR 18

Over: SANDUSKY RIVER

1800 FT. EAST OF SR 53, Seneca, OH

Built 1994 Load: 65.1 t ADT: 8,029

SR 19

Over: WESTERHOUSE DITCH

0.85 mi. South of SR 228, Seneca, OH

Built 2019 Load: 71.3 t ADT: 790

SCI TR 169

Over: MORRISON CREEK SCI

.71 MILES N OF SR 18, Seneca, OH

Built 2018 Load: 74.5 t ADT: 152

SCI TR 77

Over: Armstrong Ditch

.29 Mi S of SR 162, Seneca, OH

Built 2019 Load: 84.2 t ADT: 209

HOP CR 52

Over: BRANCH OF WOLF CREEK

JUST WEST OR TR 113, Seneca, OH

Built 1974 Load: 93.6 t ADT: 103

PLE CR 62

Over: GREEN CREEK PL

.11 MI W OF TR169, Seneca, OH

Built 1978 Load: 19.4 t ADT: 831

BLO TR 77

Over: HONEY CREEK

.28 MI S OF US 224, Seneca, OH

Built 1943 Load: 23.7 t ADT: 155

RIVER RD.

Over: WILLOW CREEK

200 feet East of Ohio Ave, Seneca, OH

Built 1914 Load: 24.5 t ADT: 1,701

PLE TR 143

Structurally Deficient

Over: SANDUSKY RIVER "CLOSED"

.18 MI E OF SR 53, Seneca, OH

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 5, 2026