Carroll County, MD

205 public highway bridges

Carroll County Bridge Snapshot

Carroll County, Maryland contains 205 public highway bridges in the FHWA National Bridge Inventory. Roughly 26.3% are rated “Good,” 64.4% “Fair,” 5.4% “Poor,” and 5.4% 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 MD 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.

205

Total Bridges

26.3%

Good

5.4%

Poor

5.4%

Structurally Deficient

Condition Distribution

Good

26.3% (54)

Fair

64.4% (132)

Poor

5.4% (11)

SD

5.4% (11)

All Bridges (205)

Sort:

CAPE HORN ROAD NOR

Over: UNNAMED STREAM

INT. W/ HARVEY GUMMEL RD, Carroll, MD

Built 2019 Load: 34.0 t ADT: 1,457

ARRINGTON ROAD

Over: PINEY RUN

AT MARRIOTTSVILLE ROAD, Carroll, MD

Built 1958 Load: 36.3 t ADT: 260

ACCESS ROAD

Over: GEORGE'S RUN

0.1 MILE EAST OF MD 30, Carroll, MD

Built 2009 Load: 36.3 t ADT: 3,415

MD 30

Over: INDIAN RUN

0.645 M S OF MD 482, Carroll, MD

Built 2007 Load: 37.2 t ADT: 9,200

ARTERS MILL ROAD

Over: SILVER RUN

0.47 MI N OF MAYBERRY RD, Carroll, MD

Built 1986 Load: 37.6 t ADT: 245

CARROLLTON ROAD

Over: WEST BRANCH PATAPSCO RIV

0.09 MI W OF DUTROW ROAD, Carroll, MD

Built 1978 Load: 37.6 t ADT: 1,697

BIXLER CHURCH ROAD

Over: TRIBUTARY TO BIG PIPE CR

0.21 MI. N. OF MD 496, Carroll, MD

Built 1973 Load: 38.6 t ADT: 694

HOUCKSVILLE ROAD

Over: CSX RAILROAD

1 BLOCK WEST OF MD 30, Carroll, MD

Built 2002 Load: 39.0 t ADT: 4,741

MD 30

Over: TRIB TO EAST BRANCH

1.21 M N OF MD 482, Carroll, MD

Built 2007 Load: 40.8 t ADT: 9,450

MURKLE ROAD

Over: BIG PIPE CREEK

0.41 MILES SOUTH OF MD 97, Carroll, MD

Built 2005 Load: 40.8 t ADT: 377

MD 194

Over: BIG PIPE CREEK

0.64 MILE NORTH OF MD 77, Carroll, MD

Built 2005 Load: 43.1 t ADT: 5,152

GREENMOUNT CHURCH

Over: MURPHY RUN

0.3 MILES EAST OF MD 30, Carroll, MD

Built 2010 Load: 43.1 t ADT: 705

SAMS CREEK ROAD

Over: SAMS CREEK

ON FREDERICK CO LINE, Carroll, MD

Built 1986 Load: 43.5 t ADT: 362

NEWPORT ROAD

Over: GILLIS FALLS

0.09 MI N OF HOWARD CO, Carroll, MD

Built 2001 Load: 43.5 t ADT: 86

MD 86

Over: SOUTH BR GUNPOWDER FALLS

0.97 MI S OF PA LINE, Carroll, MD

Built 2020 Load: 43.7 t ADT: 4,337

BEAR RUN ROAD

Over: BEAR BRANCH

2.2 MI W OF MAYBERRY RD, Carroll, MD

Built 1974 Load: 44.0 t ADT: 397

STONE ROAD

Over: SILVER RUN

0.03 MI NW OF MAYBERRY RD, Carroll, MD

Built 1979 Load: 44.4 t ADT: 626

GOOD INTENT ROAD

Over: LITTLE PIPE CREEK

ON FREDERICK CO LINE, Carroll, MD

Built 1977 Load: 44.4 t ADT: 748

HOFFMAN MILL ROAD

Over: TRIBUTARY EAST OF BRANCH

.91 MI W - HOUCKSVILLE RD, Carroll, MD

Built 1974 Load: 46.3 t ADT: 750

WHITE ROCK ROAD

Over: PINEY RUN

1.07 MILES S OF MD 26, Carroll, MD

Built 2017 Load: 48.0 t ADT: 4,226

RICHARDSON ROAD

Over: BEAR BRANCH

1.37 MILES N OF MD 140, Carroll, MD

Built 1991 Load: 48.5 t ADT: 312

SHEPHERD'S MILL RD

Over: LITTLE PIPE CREEK

JUST E OF UNION BRIDGE, Carroll, MD

Built 2023 Load: 49.9 t ADT: 613

PINEY CREEK ROAD

Over: ALLOWAY CREEK

.7 M N OF BOWERS ROAD, Carroll, MD

Built 1900 Load: 52.2 t ADT: 234

MAYBERRY ROAD

Over: BEAR BRANCH

1.06 MILES N OF MD 140, Carroll, MD

Built 1985 Load: 52.6 t ADT: 762

BOLLINGER ROAD

Over: NORTH MIDDLE RUN

1 MI S OF WESTMNSTR PIKE, Carroll, MD

Built 1974 Load: 54.9 t ADT: 1,836

MD 84

Over: MEADOW BRANCH

1.24 MILE SOUTH OF MD 832, Carroll, MD

Built 2003 Load: 56.2 t ADT: 922

HOOVER MILL ROAD

Over: BIG PIPE CREEK

0.15 MI SW OF EBBVALE RD, Carroll, MD

Built 1984 Load: 56.2 t ADT: 35

MD 30

Over: SHILOH ROAD

2.276 M S OF MD 482, Carroll, MD

Built 2007 Load: 57.1 t ADT: 9,200

EMORY ROAD

Over: DEEP RUN

0.38 MI E OF WESLEY ROAD, Carroll, MD

Built 2000 Load: 59.0 t ADT: 150

MD 97

Over: TUCKERS BRANCH

1.02 M S OF BR NO 0306400, Carroll, MD

Built 1976 Load: 62.6 t ADT: 8,770

UNION BRIDGE ROAD

Over: CHERRY BRANCH

UNION BRIDGE ROAD, Carroll, MD

Built 1990 Load: 62.6 t ADT: 1,034

OLD NEW WINDSOR RD

Over: DICKENSON RUN

0.02 MI S OF NEW WINDSOR, Carroll, MD

Built 1987 Load: 63.0 t ADT: 1,058

MD 496

Over: BIG PIPE CREEK

3.52 MILEI WEST OF MD 30, Carroll, MD

Built 2018 Load: 68.0 t ADT: 3,975

MARRIOTTSVILLE RD

Over: SOUTH BR PATAPSCO RIVER

ON HOWARD COUNTY LINE, Carroll, MD

Built 1986 Load: 68.0 t ADT: 12,255

BLACK ROCK ROAD

Over: SOUTH BRANCH GUNPOWDER F

150 FT N OF TRACEYS MILL, Carroll, MD

Built 2001 Load: 72.6 t ADT: 228

ROCKLAND ROAD

Over: LITTLE PIPE CREEK

0.01 MI N OF ROOPS MIL RD, Carroll, MD

Built 1997 Load: 74.4 t ADT: 89

LAWNDALE ROAD

Over: NORTH BRANCH PATAPSCO RI

0.5 MI. W. EMORY ROAD, Carroll, MD

Built 1995 Load: 74.4 t ADT: 1,582

MD 140

Over: PINEY CREEK

0.85 MI N OF TANEYTOWN, Carroll, MD

Built 1997 Load: 76.6 t ADT: 5,340

CHANDLER DRIVE

Over: BEAVER RUN

87 FT SOUTH OF POOLE ROAD, Carroll, MD

Built 1998 Load: 80.3 t ADT: 825

SKIDMORE ROAD

Over: GILLIS FALLS

.2 MI N OF BRADDOCK RD, Carroll, MD

Built 1988 Load: 83.0 t ADT: 360

BUCHER JOHN ROAD

Over: LITTLE PIPE CREEK

0.02 MI W OF UNION BRIDGE, Carroll, MD

Built 1960 Load: 86.6 t ADT: 1,159

MD 854A

Over: LITTLE MORGAN RUN

1.05 MI N OF BUSHEY RD, Carroll, MD

Built 1976 Load: 99.9 t ADT: 647

FRETER ROAD

Over: PINEY RUN

0.40 MI SOUTH OF MD 26, Carroll, MD

Built 2004 Load: 99.9 t ADT: 806

MAHURON ROAD

Over: UNNAMED STREAM

75 FT. S. OLD WEST. PIKE, Carroll, MD

Built 2008 Load: 99.9 t ADT: 320

MCKINSTRYS MILL RD

Over: SAMS CREEK

ON FREDERICK CO LINE, Carroll, MD

Built 1972 Load: 17.2 t ADT: 119

OLD KAYS MILL ROAD

Over: BEAVER RUN

AT HUGHES ROAD, Carroll, MD

Built 1974 Load: 18.1 t ADT: 209

CARROLLTON ROAD

Over: EAST BRANCH PATAPSCO RIV

0.59 MI E OF RIDGE ROAD, Carroll, MD

Built 1972 Load: 22.7 t ADT: 590

STONE CHAPEL ROAD

Over: LITTLE PIPE CREEK

0.10 MI W OF AVONDALE RD, Carroll, MD

Built 1930 Load: 25.8 t ADT: 4,612

HUGHES SHOP ROAD

Over: BEAR BRANCH

0.025 MI N PLEASANT VA, Carroll, MD

Built 1974 Load: 27.7 t ADT: 152

MUMMAFORD ROAD

Over: MONOCACY RIVER

4.3 M E KEYSVILLE ROAD, Carroll, MD

Built 1911 Load: 38.1 t ADT: 268

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