Baltimore County, MD

787 public highway bridges

Baltimore County Bridge Snapshot

Baltimore County, Maryland contains 787 public highway bridges in the FHWA National Bridge Inventory. Roughly 20.8% are rated “Good,” 46.9% “Fair,” 2.9% “Poor,” and 2.9% 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 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.

787

Total Bridges

20.8%

Good

2.9%

Poor

2.9%

Structurally Deficient

Condition Distribution

Good

20.8% (164)

Fair

46.9% (369)

Poor

2.9% (23)

SD

2.9% (23)

All Bridges (787)

Sort:

TRAPPE ROAD

Over: TRIBUTARY TO BEAR CREEK

0.8 MI EAST OF MD 157, Baltimore, MD

Built 1970 Load: 20.9 t ADT: 18,600

MD 25

Over: DEEP RUN

0.05 MILE SOUTH OF MD 130, Baltimore, MD

Built 1961 Load: 21.8 t ADT: 26,821

MD 128

Over: CSX TRANSPORTATION

0.48 MILES EAST OF MD 30, Baltimore, MD

Built 1947 Load: 22.2 t ADT: 15,840

RUXTON ROAD

Over: MTA LIGHT RAIL

100 FEET W OF BELLONA AVE, Baltimore, MD

Built 1960 Load: 22.2 t ADT: 9,190

DANCE MILL ROAD

Over: DULANEY VALLEY BRANCH

0.17 MI N OF DUL VALL RD, Baltimore, MD

Built 1920 Load: 22.2 t ADT: 1,195

GUNPOWDER ROAD

Over: COMPASS RUN

0.3 MI S. OF BCKLYSVIL RD, Baltimore, MD

Built 1920 Load: 22.2 t ADT: 1,755

CROMWELL VALLEY PA

Over: TRIBUTARY TO MINEBANK RU

0.4 MI. NW CROMWELL BR RD, Baltimore, MD

Built 2005 Load: 22.2 t ADT: 100

BOTTOM ROAD

Over: LITTLE GUNPOWDER FALLS

1.8 MI NE OF FORK ROAD, Baltimore, MD

Built 1886 Load: 22.7 t ADT: 223

WESTERN RUN ROAD

Over: BLACKROCK RUN

0.1 MI E OF FALLS RD, Baltimore, MD

Built 1974 Load: 22.7 t ADT: 1,230

STABLERS CHURCH RO

Over: LITTLE FALLS

0.8 MI W OF YORK ROAD, Baltimore, MD

Built 1975 Load: 22.7 t ADT: 604

MARRIOTTSVILLE RD

Over: NORTH BRANCH OF PATAPSCO

AT BALT-CARROLL CO LINE, Baltimore, MD

Built 1976 Load: 22.7 t ADT: 5,500

PATTERSON AVENUE

Over: TRIBUTARY TO GWYNNS FALL

0.75 MI NE OF LIBERTY RD, Baltimore, MD

Built 1960 Load: 22.7 t ADT: 12,265

RIPPLE ROAD

Over: TRIBUTARY TO GWYNNS FALL

0.1 MI S OF LYNN HAVEN DR, Baltimore, MD

Built 1954 Load: 22.7 t ADT: 8,752

CARROLL ROAD

Over: CARROLL BRANCH

0.5 MI S OF SPARKS RD, Baltimore, MD

Built 1879 Load: 23.1 t ADT: 2,534

KIDDS SCHOOLHOUSE

Over: PRETTYBOY RESERVOIR

0.7 MI E BECKLEYS RD, Baltimore, MD

Built 1932 Load: 23.1 t ADT: 124

MD 129

Over: NORTH BRANCH

1.81 MI N OF MD 130, Baltimore, MD

Built 1900 Load: 23.6 t ADT: 900

HOLLIFIELD ROAD

Over: PATAPSCO RIVER

0.1 MI S JOHNNYCAKE ROAD, Baltimore, MD

Built 1934 Load: 23.6 t ADT: 11,453

WESTCHESTER AVENUE

Over: NO. 9 TROLLEY TRAIL

0.2 MI N FREDERICK RD, Baltimore, MD

Built 1900 Load: 23.6 t ADT: 1,741

VINEGAR HILL ROAD

Over: LITTLE GUNPOWDER FALLS

0.29 MI SE OF JERICHO RD, Baltimore, MD

Built 1894 Load: 24.0 t ADT: 552

GLENCOE ROAD

Over: GUNPOWDER FALLS

1 MI E OF YORK RD, Baltimore, MD

Built 1976 Load: 24.0 t ADT: 364

GWYNN OAK AVENUE

Over: TRIBUTARY TO DEAD RUN

0.18 MI N OF SECURITY BLV, Baltimore, MD

Built 1956 Load: 24.0 t ADT: 6,450

BACON ROAD

Over: FIRST MINE BRANCH

0.3 MI S OF HUNTER MILL R, Baltimore, MD

Built 1990 Load: 24.5 t ADT: 234

WINDEMERE PARKWAY

Over: DULANEY VALLEY BRANCH

0.1 MI S OF DULANEY VALLE, Baltimore, MD

Built 1959 Load: 24.5 t ADT: 643

FALLS ROAD

Over: CHARLES RUN

0.1 MI S MONKTON RD, Baltimore, MD

Built 1988 Load: 24.9 t ADT: 1,200

BLUE MOUNT ROAD

Over: GUNPOWDER FALLS

1.3 MI E OF MONKTON RD, Baltimore, MD

Built 1989 Load: 24.9 t ADT: 360

HUNTER MILL ROAD

Over: FIRST MINE BRANCH

0.4 MI NE OF BACON RD, Baltimore, MD

Built 1988 Load: 24.9 t ADT: 392

COCKEYSVILLE ROAD

Over: PARKS RUN

0.17 MI W OF MD 45, Baltimore, MD

Built 1949 Load: 24.9 t ADT: 3,390

TENBURY ROAD

Over: LONG QUARTER BRANCH

100 FEET W OF MEADOWVALE, Baltimore, MD

Built 1955 Load: 24.9 t ADT: 553

RIDGEFIELD ROAD

Over: LONG QUARTER BRANCH

0.30 MI E OF MD 45, Baltimore, MD

Built 1955 Load: 24.9 t ADT: 715

CAVES ROAD

Over: NORTH BRANCH JONES FALLS

0.12 MI SW OF MD 129, Baltimore, MD

Built 1910 Load: 24.9 t ADT: 3,208

WISE AVENUE

Over: BEAR CREEK

0.9 MI W OF NORTH PT RD, Baltimore, MD

Built 1948 Load: 25.4 t ADT: 14,960

DUTTON AVENUE AND

Over: TRIBUTARY TO PATAPSCO RI

200' S. OF EDMONDSON AVE., Baltimore, MD

Built 1979 Load: 25.4 t ADT: 6,048

LINDEN AVENUE

Over: EAST BRANCH HERBERT RUN

0.06 MI S OF EAST DR, Baltimore, MD

Built 1982 Load: 25.8 t ADT: 4,590

DULANEY VALLEY ROA

Over: DULANEY BRANCH

0.3 MI N MD RTE 542, Baltimore, MD

Built 1952 Load: 25.8 t ADT: 6,872

AVONDALE ROAD

Over: WHITE MARSH RUN

0.02 M N OF I 695, Baltimore, MD

Built 1971 Load: 25.8 t ADT: 4,232

GREEN ROAD

Over: LITTLE GUNPOWDER FALLS

1.0 MI N SWEET AIR RD, Baltimore, MD

Built 1990 Load: 26.3 t ADT: 603

HICKS ROAD

Over: LITTLE FALLS

1 MI SE OF BIG FALLS RD, Baltimore, MD

Built 1988 Load: 26.3 t ADT: 3,000

WESTERN RUN ROAD

Over: WESTERN RUN

1.3 MI N OF SHAWAN RD, Baltimore, MD

Built 1988 Load: 26.3 t ADT: 2,299

FREELAND ROAD

Over: LITTLE FALLS

1.3 MI NW OF MIDDLETOWN R, Baltimore, MD

Built 1986 Load: 26.3 t ADT: 1,699

HARTLEY MILL ROAD

Over: LONG GREEN CREEK

0.2 MI SE OF GLEN ARM RD, Baltimore, MD

Built 1988 Load: 26.3 t ADT: 1,841

BENTLEY ROAD

Over: BEETREE RUN

200 FEET N OF EAGLE MILL, Baltimore, MD

Built 1988 Load: 26.3 t ADT: 300

TAYLOR AVENUE

Over: TRIBUTARY TO HERRING RUN

0.14 MI SE OF MD 41, Baltimore, MD

Built 1969 Load: 26.8 t ADT: 14,881

US 1

Over: HERBERT RUN

0.49 MI S OF MD 644A, Baltimore, MD

Built 1949 Load: 27.2 t ADT: 11,542

OAKLEIGH ROAD

Over: HERRING RUN

0.2 MI S OF PERRING PKWY, Baltimore, MD

Built 1953 Load: 27.2 t ADT: 7,961

HYDES ROAD

Over: LONG GREEN CREEK

0.5 M W OF LONG GREEN PKE, Baltimore, MD

Built 1952 Load: 27.2 t ADT: 5,400

LITTLE CREEK DRIVE

Over: DEAD RUN

250 FT W DOGWOOD RD, Baltimore, MD

Built 1952 Load: 27.2 t ADT: 773

BECKLEYSVILLE ROAD

Over: PRETTYBOY RESERVOIR

3 MI W MIDDLETOWN RD, Baltimore, MD

Built 1931 Load: 27.2 t ADT: 1,100

I-695 IL

Over: BEAR CREEK

MILEPOST M46.2, Baltimore, MD

Built 1975 Load: 27.5 t ADT: 14,819

POT SPRING ROAD

Over: SPRING BRANCH

0.5 MI S OF TIMONIUM RD, Baltimore, MD

Built 1973 Load: 27.7 t ADT: 13,676

WOODLAWN DRIVE

Over: TRIBUTARY TO GWYNNS FALL

.09 MI N WINDSOR MILL, Baltimore, MD

Built 1963 Load: 28.1 t ADT: 15,620

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