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)

MD 200 (ICC) EB

Good

Over: Northwest Branch

1.40 Mi West of MD 650, Montgomery, MD

Built 2010 Load: 48.1 t ADT: 32,786

LYTTONSVILLE PLACE

Good

Over: PURPLE LINE

1 MILES NORTH OF MD 410, Montgomery, MD

Built 2019 Load: 48.6 t ADT: 10,523

MD 355

Good

Over: GREAT SENECA CREEK

1.32 MILES N OF MD 124, Montgomery, MD

Built 2000 Load: 49.0 t ADT: 31,050

HOWARD CHAPEL RD

Good

Over: PATUXENT RIVER

1.7 MI NORTH OF MD 650, Montgomery, MD

Built 2002 Load: 49.0 t ADT: 563

DRIVEWAY OFF AINTR

Good

Over: WATTS BRANCH

WOOTTONS MILL PARK, Montgomery, MD

Built 2009 Load: 49.4 t ADT: 20

LONGMEAD CROSSING

Good

Over: MD 200 (ICC)

3.61 MI WEST OF MD650, Montgomery, MD

Built 2010 Load: 49.4 t ADT: 6,790

PARK VALLEY ROAD

Good

Over: SLIGO CREEK

AT SLIGO CR PKWY, Montgomery, MD

Built 2019 Load: 49.9 t ADT: 1,126

MD 97 NB

Good

Over: MD 200 (ICC)

0.59 MI NORTH OF MD 28, Montgomery, MD

Built 2010 Load: 50.3 t ADT: 23,218

MD 200 (ICC) Ramp

Good

Over: MD 200 (ICC) Ramp SE

0.2 mi W US29/MD200 I/C, Montgomery, MD

Built 2010 Load: 50.3 t ADT: 2,449

I-370 WBR

Good

Over: IS-370 RP1, MD200 RP7

5.67 MI WEST OF MD97, Montgomery, MD

Built 2010 Load: 50.8 t ADT: 39,531

WHITE GROUND ROAD

Good

Over: BUCKLODGE BRANCH

2 MILES NORTH OF MD 28, Montgomery, MD

Built 2012 Load: 50.8 t ADT: 823

WATKINS MILL ROAD

Good

Over: WHETSTONE RUN

0.5 MILES EAST OF MD 355, Montgomery, MD

Built 1997 Load: 50.8 t ADT: 8,397

WATKINS MILL ROAD

Good

Over: CSX RAILROAD

.28 MI. N. OF MD 117, Montgomery, MD

Built 2006 Load: 50.8 t ADT: 2,136

MD 200 (ICC) EB

Good

Over: Bonifant Road & NW Branc

2.07 Mi. West of MD650, Montgomery, MD

Built 2010 Load: 51.7 t ADT: 32,786

NORBECK RD (MD28)

Good

Over: MD 200 (ICC)

4.1 MI WEST OF MD 65, Montgomery, MD

Built 2010 Load: 52.6 t ADT: 18,475

IS-370 EBR

Good

Over: IS-370 RP1, MD200 RP7

5.67 MI WEST OF MD 97, Montgomery, MD

Built 2010 Load: 53.5 t ADT: 39,531

NEEDWOOD ROAD

Good

Over: MD 200 (ICC)

2.88 MI W OF MD 97, Montgomery, MD

Built 2010 Load: 53.5 t ADT: 760

MD 97

Good

Over: Meadow Branch

2 MI. N OF OLNEY, Montgomery, MD

Built 2021 Load: 53.8 t ADT: 10,400

NOTLEY ROAD

Good

Over: MD 200 (ICC)

0.71 MI WEST OF MD 650, Montgomery, MD

Built 2010 Load: 54.0 t ADT: 4,997

INWOOD AVENUE

Good

Over: TRIBUTARY TO SLIGO CREEK

AT FOLK STREET, Montgomery, MD

Built 1956 Load: 54.4 t ADT: 2,972

JEB STUART TRAIL

Good

Over: TRIB TO LITTLE MONOCACY

0.18 MI WEST OF MD RTE 28, Montgomery, MD

Built 2010 Load: 54.9 t ADT: 20

MD 28

Good

Over: SENECA CREEK

0.2 MILE EAST OF MD 107, Montgomery, MD

Built 2000 Load: 55.8 t ADT: 11,520

CLARKSBURG ROAD

Good

Over: LITTLE BENNETT CREEK

1.9 MI N OF MD 355, Montgomery, MD

Built 1998 Load: 56.2 t ADT: 2,934

MD 200 (ICC) EB

Good

Over: Ramp NW

0.6 mi W of Briggs Chaney, Montgomery, MD

Built 2011 Load: 56.2 t ADT: 22,682

WHITES FERRY ROAD

Good

Over: BROAD RUN TRIBUTARY

2 MI W OF JCT SR 109, Montgomery, MD

Built 1998 Load: 57.1 t ADT: 1,999

DAHLGREN ROAD

Good

Over: PAINT BRANCH

GSA at White Oak, MD. I-, Montgomery, MD

Built 2009 Load: 57.1 t ADT: 110

BURNING TREE ROAD

Good

Over: BOOZE CREEK

0.5 MILES SOUTH OF MD 191, Montgomery, MD

Built 2008 Load: 57.6 t ADT: 1,938

Ramp WS & WN

Good

Over: Ramp NW

0.5 mi S Briggs Chaney Rd, Montgomery, MD

Built 2011 Load: 57.6 t ADT: 2,706

CLARKSBURG ROAD

Good

Over: LITTLE BENNETT CREEK TRI

2.8 MILES NORTH OF MD 355, Montgomery, MD

Built 1988 Load: 58.0 t ADT: 2,969

MD 200 (ICC) EB

Good

Over: Good Hope Tributary

0.48 Mi East of MD650, Montgomery, MD

Built 2010 Load: 58.5 t ADT: 31,755

Ramp ES

Good

Over: Ramp SE

0.12 mi W of 29/200 I/C, Montgomery, MD

Built 2011 Load: 58.5 t ADT: 2,449

MUNCASTER MILL RD

Good

Over: MD 200 (ICC)

2.33 MI W OF MD 97, Montgomery, MD

Built 2010 Load: 59.0 t ADT: 19,690

MD 410

Good

Over: GEORGETOWN BRANCH TRAIL

0.52 MILE EAST OF MD 355, Montgomery, MD

Built 1997 Load: 59.4 t ADT: 26,061

LINDEN LANE

Good

Over: CSXT RAILROAD

0.5 MI W OF SEMINARY ROAD, Montgomery, MD

Built 1996 Load: 59.9 t ADT: 4,090

PENNYFIELD LOCK RO

Good

Over: UNNAMED TRIBUTARY

0.8 MI S OF RIVER ROAD, Montgomery, MD

Built 2017 Load: 59.9 t ADT: 529

LITTLE SENECA PKWY

Good

Over: LITTLE SENECA CREEK

0.1 MI. E. OF MD 355, Montgomery, MD

Built 2014 Load: 59.9 t ADT: 10,875

MD 200 Ramp ES

Good

Over: MD 200 (ICC) Ramp SB

0.10 Mi. West of US 29, Montgomery, MD

Built 2010 Load: 59.9 t ADT: 2,449

MD 200 (ICC) WB

Good

Over: Good Hope Tributary

0.45 Mi East of MD650, Montgomery, MD

Built 2010 Load: 60.3 t ADT: 32,064

BROOKSIDE VISITORS

Good

Over: NORTHWEST BRANCH TRIBUTA

ENT. FROM GLENALLEN AVE., Montgomery, MD

Built 1999 Load: 60.8 t ADT: 55

PEACH TREE ROAD

Good

Over: CSXT RAILROAD

1 MI S OF BARNESVILLE RD, Montgomery, MD

Built 2000 Load: 61.2 t ADT: 400

CLARKSBURG ROAD

Good

Over: BENNETT CREEK

2.2 MI SW OF JCT SR 80, Montgomery, MD

Built 2011 Load: 63.0 t ADT: 4,123

I-370 RAMP L(7)

Good

Over: I-370 RAMP M(3)

.23 MI E OF MD 355, Montgomery, MD

Built 2010 Load: 63.5 t ADT: 3,953

FIRST STREET

Good

Over: ROCK CREEK TRIBUTARY

0.07 MILE WEST OF MD28, Montgomery, MD

Built 2017 Load: 64.8 t ADT: 3,496

WHITES FERRY ROAD

Good

Over: BROAD RUN TRIBUTARY

1 MI W OF ELGIN ROAD, Montgomery, MD

Built 2014 Load: 65.3 t ADT: 1,836

NORBECK ROAD

Good

Over: NURSERY RUN

0.98 MILES EAST OF MD 182, Montgomery, MD

Built 2002 Load: 65.3 t ADT: 18,960

Ramp WN to US29 NB

Good

Over: Ramp NB to Briggs Chaney

0.8 Mi S Briggs Chaney Rd, Montgomery, MD

Built 2011 Load: 65.3 t ADT: 309

WATKINS MILL ROAD

Good

Over: GREAT SENECA CREEK

.6 MI SE OF BLUNT ROAD, Montgomery, MD

Built 1990 Load: 65.7 t ADT: 12,760

IS 370

Good

Over: OAKMONT AVENUE

0.37 MILE EAST OF MD 355, Montgomery, MD

Built 1989 Load: 66.2 t ADT: 78,741

VALLEY ROAD

Good

Over: BOOZE CREEK

40 FT E OF FALLEN OAK RD, Montgomery, MD

Built 1964 Load: 67.4 t ADT: 216

GOLD MINE ROAD

Good

Over: HAWLINGS RIVER

0.4 MILES WEST OF MD 650, Montgomery, MD

Built 2019 Load: 67.7 t ADT: 2,792

Read our methodology — how this data is sourced, computed, and verified.

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial