Montgomery County, MD

522 public highway bridges

Montgomery County Bridge Snapshot

Montgomery County, Maryland contains 522 public highway bridges in the FHWA National Bridge Inventory. Roughly 33% are rated “Good,” 46.7% “Fair,” 4.6% “Poor,” and 4.6% 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.

522

Total Bridges

33%

Good

4.6%

Poor

4.6%

Structurally Deficient

Condition Distribution

Good

33% (172)

Fair

46.7% (244)

Poor

4.6% (24)

SD

4.6% (24)

All Bridges (522)

Sort:

MD 28

Over: CSXT, WMATA, RAMP

0.19 MILE WEST OF MD 911, Montgomery, MD

Built 1981 Load: 48.1 t ADT: 27,020

IS 270 NBR

Over: BR OF LITTLE BENNETT CRK

0.32 MILE SOUTH OF MD 109, Montgomery, MD

Built 1952 Load: 48.1 t ADT: 94,940

BROOKVILLE ROAD

Over: CSXT RAILROAD

0.4 MI SW OF MD 192, Montgomery, MD

Built 1976 Load: 48.1 t ADT: 19,611

HYATTSTOWN MILL RO

Over: TRIBUTARY OF LITTLE BENN

0.12 MI. E. OF JCT SR 355, Montgomery, MD

Built 2006 Load: 48.1 t ADT: 62

CLARA BARTON PARKW

Over: RIVERSIDE DRIVE

0.7 MILES SOUTH OF I-495;, Montgomery, MD

Built 1961 Load: 49.0 t ADT: 16,120

MD 355

Over: LITTLE SENECA CREEK

1.44 MILES NORTH OF MD 27, Montgomery, MD

Built 1922 Load: 49.4 t ADT: 13,820

OAKLYN DRIVE

Over: ROCK RUN

1 MI SOUTH OF MD 189, Montgomery, MD

Built 1989 Load: 49.4 t ADT: 3,785

MD 410

Over: ROCK CREEK

0.55 MILE EAST OF MD 186, Montgomery, MD

Built 1974 Load: 49.9 t ADT: 26,931

EDMONSTON DRIVE

Over: CSXT RR & WMATA METRO

0.05 MILES EAST OF MD 355, Montgomery, MD

Built 1981 Load: 49.9 t ADT: 10,524

CLUB HOLLOW ROAD

Over: BROAD RUN

0.2 MI W OF EDWARDS FERRY, Montgomery, MD

Built 1930 Load: 51.2 t ADT: 443

BLACK ROCK RD

Over: GREAT SENECA CREEK

0.7 MI N OF JCT SR 28, Montgomery, MD

Built 1965 Load: 51.2 t ADT: 373

MD 190

Over: CABIN JOHN CREEK

0.74 MILE EAST OF MD 191, Montgomery, MD

Built 1974 Load: 51.7 t ADT: 22,022

PERSIMMON TREE ROA

Over: CONGRESSIONAL CC UNDERPA

0.4 MI N OF I-495, Montgomery, MD

Built 1977 Load: 51.7 t ADT: 2,685

INDIANOLA DRIVE

Over: CSXT RR & WMATA METRO

1 MI E OF MD RTE 355, Montgomery, MD

Built 1981 Load: 52.2 t ADT: 1,075

IS 495X SB

Over: CABIN JOHN CREEK

0.02 MILE SOUTH OF GV 6, Montgomery, MD

Built 1964 Load: 53.1 t ADT: 22,160

PEACH ORCHARD ROAD

Over: PAINT BRANCH

.5 M N OF BRIGGS CHANEY R, Montgomery, MD

Built 1990 Load: 53.1 t ADT: 3,677

BRIGHTON DAM ROAD

Over: BRIGHTON DAM & TRIADELPH

1 MILE EAST OF MD 650, Montgomery, MD

Built 1944 Load: 53.1 t ADT: 7,106

MD 650

Over: SLIGO CREEK

0.43 MILE NORTH OF MD 410, Montgomery, MD

Built 1935 Load: 53.5 t ADT: 33,100

MD 185

Over: ROCK CREEK

0.13 MILE NORTH OF IS 495, Montgomery, MD

Built 1957 Load: 53.5 t ADT: 44,232

HIPSLEY MILL ROAD

Over: PATUXENT RIVER

1.8 MILES NORTH OF MD 650, Montgomery, MD

Built 1973 Load: 54.0 t ADT: 675

Briggs Chaney Road

Over: MD 200 (ICC)

0.75 MI E OF US 29, Montgomery, MD

Built 2011 Load: 54.0 t ADT: 18,193

WOOTTON PARKWAY

Over: TRIB CABIN JOHN CREEK

1.1 MILES WEST OF MD 355, Montgomery, MD

Built 1991 Load: 54.4 t ADT: 22,236

TWINBROOK PARKWAY

Over: CSXT RR & WMATA METRO

0.24 MILES EAST OF MD 355, Montgomery, MD

Built 1964 Load: 54.9 t ADT: 39,672

CRABBS BRANCH WAY

Over: METRO ACCESS ROAD

.7 MI S OF SHADY GROVE RD, Montgomery, MD

Built 1983 Load: 56.2 t ADT: 23,523

BRIGHTON DAM ROAD

Over: REDDY BRANCH

0.9 MI E OF JCT SR 97, Montgomery, MD

Built 1910 Load: 56.7 t ADT: 743

CRABBS BRANCH WAY

Over: CRABBS CREEK

0.1 MI W OF REDLAND RD, Montgomery, MD

Built 1982 Load: 57.1 t ADT: 16,564

IS 270 & CD RDS

Over: WATTS BRANCH

0.21 MILE NORTH OF MD 28, Montgomery, MD

Built 1955 Load: 57.6 t ADT: 239,460

IS 495

Over: BRUNETT AVENUE

0.297 MILE WEST OF US 29, Montgomery, MD

Built 1959 Load: 57.6 t ADT: 232,010

PURDUM ROAD

Over: BENNETT CREEK TRIBUTARY

0.6 MI N OF MOUNTAIN VIEW, Montgomery, MD

Built 1975 Load: 57.6 t ADT: 830

CATTAIL ROAD

Over: DRY SENECA CREEK

1.5 MI S OF JCT SR 28, Montgomery, MD

Built 1975 Load: 57.6 t ADT: 2,435

SUGARLAND ROAD

Over: DRY SENECA CREEK

2.3 MI S OF JCT SR 28, Montgomery, MD

Built 1971 Load: 58.0 t ADT: 433

HARRIS ROAD WEST

Over: LITTLE MONOCACY RIVER

0.7 MI S OF MT EPHRAM RD, Montgomery, MD

Built 1925 Load: 58.0 t ADT: 161

WOOTTON PARKWAY

Over: WATTS BRANCH

0.9 MI W OF JCT SR 189, Montgomery, MD

Built 1972 Load: 58.0 t ADT: 14,452

MD 115

Over: NORTH BR OF ROCK CREEK

0.29 M E OF GRIST MILL DR, Montgomery, MD

Built 1917 Load: 58.5 t ADT: 16,981

MD 28 EB

Over: ROCK CREEK

0.31 M E OF AVERY ROAD, Montgomery, MD

Built 1970 Load: 58.5 t ADT: 23,866

MD 28 WB

Over: ROCK CREEK

0.31 M E OF AVERY ROAD, Montgomery, MD

Built 1970 Load: 58.5 t ADT: 24,840

GLEN ROAD

Over: PINEY BRANCH

0.6 MI W OF GLEN MILL RD, Montgomery, MD

Built 1935 Load: 59.0 t ADT: 4,689

TURKEY FOOT ROAD

Over: MUDDY BRANCH

100 FT N OF QUERY MILL RD, Montgomery, MD

Built 1968 Load: 59.0 t ADT: 1,453

EAST GUDE DRIVE (E

Over: CSXT RR & WMATA METRO

0.1 MILE EAST OF MD 355, Montgomery, MD

Built 1989 Load: 59.4 t ADT: 23,921

EDNOR ROAD

Over: NORTHWEST BRANCH

1.6 MILES WEST OF MD 650, Montgomery, MD

Built 1990 Load: 60.3 t ADT: 2,110

LONG CORNER ROAD

Over: PATUXENT RIVER

1 MILE NORTH OF GUE ROAD, Montgomery, MD

Built 1968 Load: 61.2 t ADT: 2,595

WOOTTON PARKWAY

Over: CABIN JOHN CREEK

1.1 MILES WEST MD 355, Montgomery, MD

Built 1991 Load: 61.2 t ADT: 20,825

BOWIE MILL ROAD

Over: ROCK CREEK NORTH BRANCH

1.8 MI NE OF MD 115, Montgomery, MD

Built 1959 Load: 61.7 t ADT: 10,400

EAST RANDOLPH ROAD

Over: PAINT BRANCH

0.5 MI W OLD COLUMBIA PK, Montgomery, MD

Built 1963 Load: 61.7 t ADT: 34,092

TACKBROOKE DRIVE

Over: ROCK CREEK NORTH BRANCH

N OF BOWIE MILL ROAD, Montgomery, MD

Built 2002 Load: 62.1 t ADT: 67

WEST OLD BALTIMORE

Over: LITTLE SENECA CREEK

1.0 MILES WEST OF MD 355, Montgomery, MD

Built 1934 Load: 62.6 t ADT: 1,069

MD 109

Over: LITTLE BENNETT CREEK

UNDER IS 270 OVERPASS, Montgomery, MD

Built 1951 Load: 63.5 t ADT: 7,232

GOSHEN ROAD

Over: WHETSTONE RUN TRIBUTARY

.25 MI N OF MIDCOUNTY HWY, Montgomery, MD

Built 1930 Load: 63.5 t ADT: 26,801

WILDCAT ROAD

Over: WILDCAT BRANCH

2.4 MI SW OF MD 124, Montgomery, MD

Built 1935 Load: 63.9 t ADT: 431

LITTLE FALLS PARKW

Over: WILLET BRANCH

0.1 MI S OF HILLANDALE RD, Montgomery, MD

Built 1958 Load: 64.4 t ADT: 17,373

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