State profile · Below national median SD

Maryland bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Maryland — drawn straight from the FHWA National Bridge Inventory.

5,527
Public bridges
25.9%
Good condition
4.3%
Poor condition
4.3%
Structurally deficient

Total Bridges

5,527

Public highway bridges in Maryland

Good Condition

25.9%

1,432 bridges rated 7-9

-24.1pp vs 50% benchmark

Poor Condition

4.3%

236 bridges rated 0-4

Structurally Deficient

4.3%

236 bridges flagged for repair priority

-2.7pp vs national avg 7.0%

Maryland vs national bridge condition

Maryland — Good condition share 25.9%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Maryland — Structurally deficient share 14.2%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Maryland vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Maryland on the same metric.

09

Connecticut

3.95% top marginal rate
Structure
Progressive
Burden @ $100K
$4,277

47

Tennessee

3.97% top marginal rate
Structure
Progressive
Burden @ $100K
$20,426
Selected

24

Maryland

4.27% top marginal rate
Structure
Progressive
Burden @ $100K
$5,527

08

Colorado

4.32% top marginal rate
Structure
Progressive
Burden @ $100K
$8,965

41

Oregon

4.46% top marginal rate
Structure
Progressive
Burden @ $100K
$8,310

Bridges Needing Most Attention in Maryland

Six lowest-condition bridges in Maryland, ranked by composite NBI rating. Each is inspected at least every 24 months.

All Bridges in Maryland

NEAL ROAD

Good

Over: BIG BRANCH

0.3 MILE E OF ST PAULS RD, Harford, MD

Built 1950 Load: 47.2 t ADT: 60

MD 200 (ICC) WB

Good

Over: Bonifant Road & NW Branc

2.07 Mi West of MD 650, Montgomery, MD

Built 2010 Load: 47.2 t ADT: 32,683

MD 193 EB

Good

Over: AMTRAK

0.1 MILE EAST OF MD 564, Prince George's, MD

Built 1986 Load: 47.2 t ADT: 17,728

IS 70 EB

Good

Over: LITTLE CONOCOCHEAGUE CRE

1.34 MILES EAST OF MD 68, Washington, MD

Built 1965 Load: 47.2 t ADT: 40,770

OTHELLO REGIONAL P

Good

Over: LOCAL STREAM

SOUTH OF MD 180, Frederick, MD

Built 2020 Load: 47.3 t ADT: 200

MD 36

Good

Over: ELKLICK RUN

0.73 M S OF BR NO 0112700, Allegany, MD

Built 2007 Load: 47.6 t ADT: 7,706

MD 36

Good

Over: GEORGES CREEK

0.10 MILE SOUTH OF MD 937, Allegany, MD

Built 1975 Load: 47.6 t ADT: 4,720

IS 695

Good

Over: INGLESIDE AVENUE

0.49 MILE SOUTH OF US 40, Baltimore, MD

Built 2021 Load: 47.6 t ADT: 180,306

MD 286

Good

Over: BACK CREEK

0.3 M E OF FERRY SLIP RD, Cecil, MD

Built 2003 Load: 47.6 t ADT: 2,311

MD 17

Good

Over: MIDDLE CREEK

0.9 MILE NORTH OF US 40, Frederick, MD

Built 2005 Load: 47.6 t ADT: 1,951

WHEEL ROAD

Good

Over: BYNUM RUN

1.2 MILES NE OF MD 924, Harford, MD

Built 1996 Load: 47.6 t ADT: 6,075

MACTON ROAD

Good

Over: BROAD CREEK

1.4 MILES SW OF MD 136, Harford, MD

Built 1955 Load: 47.6 t ADT: 162

Kerby Hill Rd.

Good

Over: MD 210 Service Rd.

1.5 MILE SOUTH OF I-495, Howard, MD

Built 2021 Load: 47.6 t ADT: 6,525

IS 270Y HOV RAMP

Good

Over: IS 270Y MEDIAN

AT WESTLAKE TERRACE, Montgomery, MD

Built 2003 Load: 47.6 t ADT: 114,000

MONTROSE PARKWAY

Good

Over: OLD FARM CREEK

1.0 MILE EAST OF I-270, Montgomery, MD

Built 2007 Load: 47.6 t ADT: 28,776

PRESERVE PARKWAY

Good

Over: TRIBUTARY TO CABIN JOHN

0.1M S OF WOOTTON PKWY, Montgomery, MD

Built 1999 Load: 47.6 t ADT: 2,840

Old Gunpowder Road

Good

Over: MD 200 (ICC)

0.8 MI W of I-95, Prince George's, MD

Built 2011 Load: 47.6 t ADT: 12,568

MD 64

Good

Over: CSX TRANSPORTATION

0.06 MILE EAST OF MD 491, Washington, MD

Built 2000 Load: 47.6 t ADT: 6,732

WHITE ROCK ROAD

Good

Over: PINEY RUN

1.07 MILES S OF MD 26, Carroll, MD

Built 2017 Load: 48.0 t ADT: 4,226

MD 97 (GEORGIA AV)

Good

Over: RANDOLPH ROAD

1.4 MI E OF MD 185, Montgomery, MD

Built 2018 Load: 48.0 t ADT: 46,114

ELVATON ROAD

Good

Over: MARLEY CREEK

.56 MI. S. OF HOSPITAL DR, Anne Arundel, MD

Built 1985 Load: 48.1 t ADT: 4,813

MOUNT VISTA ROAD

Good

Over: SWEATHOUSE BRANCH

0.60 MI E OF MD 147, Baltimore, MD

Built 2008 Load: 48.1 t ADT: 2,290

MASON BRANCH ROAD

Good

Over: MASON BRANCH

ON QUEEN ANNES CO LINE, Caroline, MD

Built 1910 Load: 48.1 t ADT: 1,277

GALLAHER ROAD

Good

Over: GRAMIES RUN

0.27 MI N OF RUSSELL RD, Cecil, MD

Built 2004 Load: 48.1 t ADT: 743

MD 17

Good

Over: MIDDLE CREEK

AT MIDDLE POINT ROAD, Frederick, MD

Built 2005 Load: 48.1 t ADT: 1,951

BALLENGER CREEK PI

Good

Over: BR OF TUSCARORA CREEK

SOUTH OF CAP STINE RD INT, Frederick, MD

Built 2009 Load: 48.1 t ADT: 1,797

LENHART ROAD

Good

Over: FISHING CREEK

0.25 M N DEVILBLISS BR RD, Frederick, MD

Built 1980 Load: 48.1 t ADT: 213

REDLAND ROAD

Good

Over: MD 200 (ICC)

4.38 MI W OF MD 97, Montgomery, MD

Built 2009 Load: 48.1 t ADT: 12,649

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

MILLS ROAD

Good

Over: SHARMANS BRANCH

0.6 MI S OF BURNSIDE DR, Washington, MD

Built 2009 Load: 48.1 t ADT: 965

US 13 SB

Good

Over: POCOMOKE RIVER

ON SOMERSET CO LINE, Worcester, MD

Built 1966 Load: 48.1 t ADT: 15,550

MD 234

Good

Over: GILBERT SWAMP RUN

0.14 M W OF ST CLAIR ROAD, Charles, MD

Built 2018 Load: 48.3 t ADT: 6,000

MD 194

Good

Over: LITTLE PIPE CREEK

ON CARROLL CO LINE, Frederick, MD

Built 1953 Load: 48.3 t ADT: 4,425

MOUNT ZION ROAD

Good

Over: PINEY RUN

1.4 MI W OF MD 88, Baltimore, MD

Built 2011 Load: 48.5 t ADT: 221

DUNK FREELAND ROAD

Good

Over: LITTLE DEER CREEK

0.03 MI S OF HARRIS M RD, Baltimore, MD

Built 2007 Load: 48.5 t ADT: 100

RUSSELL ST. SB RAM

Good

Over: WALKWAY

UNDER IS 95, Baltimore city, MD

Built 2006 Load: 48.5 t ADT: 13,500

RIVER BRIDGE ROAD

Good

Over: TIDY ISLAND CREEK

0.24 MI SW OF DE LINE, Caroline, MD

Built 2007 Load: 48.5 t ADT: 213

RICHARDSON ROAD

Good

Over: BEAR BRANCH

1.37 MILES N OF MD 140, Carroll, MD

Built 1991 Load: 48.5 t ADT: 312

IS 70 EBR

Good

Over: MONOCACY RIVER

0.22 M S OF BR NO 1018400, Frederick, MD

Built 1985 Load: 48.5 t ADT: 72,900

IS 70 WBR

Good

Over: MONOCACY RIVER

0.22 M S OF BR NO 1018400, Frederick, MD

Built 1985 Load: 48.5 t ADT: 72,900

MOORES MILL ROAD

Good

Over: BYNUM RUN

0.3 MILES NW OF MD 22, Harford, MD

Built 2005 Load: 48.5 t ADT: 9,615

CROSS ROAD TRAIL

Good

Over: MATAPONI CREEK

0.79 M N OF NORTH KEY RD, Prince George's, MD

Built 2000 Load: 48.5 t ADT: 900

LYTTONSVILLE PLACE

Good

Over: PURPLE LINE

1 MILES NORTH OF MD 410, Montgomery, MD

Built 2019 Load: 48.6 t ADT: 10,523

MD 404

Good

Over: BRANCH OF MILL CREEK

0.2 M W OF DULIN ROAD, Talbot, MD

Built 2017 Load: 48.6 t ADT: 16,500

ISLAND STREET

Good

Over: JACKSON RUN

0.03 MI W OF RAILROAD AVE, Allegany, MD

Built 1940 Load: 49.0 t ADT: 337

BROCK BRIDGE ROAD

Good

Over: DORSEY RUN

1.2 MILES WEST OF MD 175, Anne Arundel, MD

Built 1991 Load: 49.0 t ADT: 3,203

MD 43

Good

Over: AMTRAK

0.156 MILE WEST OF MD 150, Baltimore, MD

Built 2006 Load: 49.0 t ADT: 13,012

MD 213

Good

Over: AMTRAK

0.13 MILE SOUTH OF MD 545, Cecil, MD

Built 1989 Load: 49.0 t ADT: 21,818

COSNER ROAD

Good

Over: EAST BRANCH/WINTERS RUN

0.3 MI E OF PHILLIPS M RD, Harford, MD

Built 1991 Load: 49.0 t ADT: 81

SOUTH TOLLGATE ROA

Good

Over: PLUMTREE RUN

0.38 MI. N. PLUMTREE RD., Harford, MD

Built 2019 Load: 49.0 t ADT: 225

Showing 4,501-4,550 of 5,527 bridges

Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.