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

SANDS ROAD

Good

Over: GALLOWAY CREEK

0.1 MILE NORTH OF MD 4, Anne Arundel, MD

Built 1999 Load: 26.3 t ADT: 319

HOUCKS MILL ROAD

Good

Over: LITTLE GUNPOWDER FALLS

0.8 MI E. of OLD YORK RD, Baltimore, MD

Built 1989 Load: 26.3 t ADT: 869

LAUREL RUN ROAD

Good

Over: LAUREL RUN

POTOMAC GARRETT ST FOREST, Garrett, MD

Built 2001 Load: 26.3 t ADT: 5

DOCTOR JOHNSON ROA

Good

Over: ST. CLEMENTS CREEK

0.9 MI W OF MD RTE 242, St. Mary's, MD

Built 1975 Load: 26.3 t ADT: 880

GILLIS ROAD

Good

Over: GILLIS FALLS

2.51 MILES E OF MD 27, Carroll, MD

Built 1975 Load: 26.8 t ADT: 828

BLACK BRIDGE ROAD

Good

Over: BIG ELK CREEK

2 MI N OF MD RTE 273, Cecil, MD

Built 2002 Load: 26.8 t ADT: 100

DRAWBRIDGE ROAD

Good

Over: TRANSQUAKING RIVER

1.38 MILES S OF AIREYS RD, Dorchester, MD

Built 1992 Load: 26.8 t ADT: 570

RIVER ROAD

Good

Over: NORTHEAST BRANCH

0.16 MI W OF MD 201, Prince George's, MD

Built 1991 Load: 26.8 t ADT: 10,548

MD 450

Good

Over: COLLEGE CREEK

0.3 MILE WEST OF MD 435, Anne Arundel, MD

Built 1987 Load: 27.2 t ADT: 10,364

BROCK BRIDGE ROAD

Good

Over: PATUXENT RIVER

ON THE PG COUNTY LINE, Anne Arundel, MD

Built 1966 Load: 27.2 t ADT: 5,944

McDONOGH ROAD

Good

Over: TRIBUTARY TO HORSEHEAD B

AT LAMBORN RD INTERSECT, Baltimore, MD

Built 2012 Load: 27.2 t ADT: 14,121

WINCHESTER BOULEVA

Good

Over: TRIBUTARY OF TUSCARORA C

WEST OF HARVARD PLACE, Frederick, MD

Built 2002 Load: 27.2 t ADT: 350

REICHS FORD ROAD

Good

Over: BUSH CREEK

0.1 MI W OF IJAMSVILLE RD, Frederick, MD

Built 1909 Load: 27.7 t ADT: 817

WEST LIBERTY ROAD

Good

Over: DEER CREEK

0.2 MI S OF GORSUCH RD, Baltimore, MD

Built 1992 Load: 28.1 t ADT: 348

WINTERS CHURCH RD

Good

Over: LITTLE PIPE CREEK

0.48 MI S OF MD 75, Carroll, MD

Built 1981 Load: 28.1 t ADT: 151

MD 76

Good

Over: MARYLAND MIDLAND RR

0.18 MILE NORTH OF MD 77, Frederick, MD

Built 2001 Load: 28.1 t ADT: 901

CHURCH ROAD

Good

Over: UNNAMED STREAM

1.5 MILES NORTH OF MD 214, Prince George's, MD

Built 2010 Load: 28.1 t ADT: 9,394

WARNER HOLLOW ROAD

Good

Over: TRIBUTARY OF EDGEMONT RE

0.95 MI SE OF MD RTE 491, Washington, MD

Built 1985 Load: 28.1 t ADT: 96

CHET KELLY ROAD

Good

Over: MILL RUN

0.01 MI S MILL RUN RD, Garrett, MD

Built 2015 Load: 28.2 t ADT: 138

MD 131

Good

Over: ROLAND RUN

0.874 MILE WEST OF MD 45, Baltimore, MD

Built 1992 Load: 28.5 t ADT: 12,051

WRIGHTS MILL ROAD

Good

Over: BRICE RUN

0.37 MI N OF DAVIS AVENUE, Baltimore, MD

Built 1986 Load: 28.6 t ADT: 320

CATOCTIN HOLLOW RD

Good

Over: LITTLE HUNTING CREEK

1.12 MI W OF US RTE 15, Frederick, MD

Built 1980 Load: 29.0 t ADT: 201

AVILTON LONACONING

Good

Over: SAVAGE RIVER

2.8 MI S OF MD RTE 40, Garrett, MD

Built 2001 Load: 29.0 t ADT: 1,024

US 40

Good

Over: BR OF OTTER POINT CREEK

0.41 MILE EAST OF MD 24, Harford, MD

Built 1994 Load: 29.0 t ADT: 21,614

MD 32 EB

Good

Over: CEDAR LANE

1.19 MILE NORTH OF US 29, Howard, MD

Built 1994 Load: 29.0 t ADT: 48,582

MD 32 WB

Good

Over: CEDAR LANE

1.19 MILE NORTH OF US 29, Howard, MD

Built 1994 Load: 29.0 t ADT: 48,582

US 1 NB

Good

Over: PATUXENT RIVER

ON HOWARD CO LINE, Prince George's, MD

Built 1949 Load: 29.0 t ADT: 16,182

BUNTING ROAD

Good

Over: BEAVERDAM CREEK

0.12 MI EAST OF US 13, Worcester, MD

Built 2007 Load: 29.0 t ADT: 180

OLD STAGE ROAD

Good

Over: CAREY BRANCH

0.66 MI SE OF US 113, Worcester, MD

Built 1992 Load: 29.0 t ADT: 220

MD 234

Good

Over: ALLENS FRESH RUN

0.28 MILES EAST OF US 301, Charles, MD

Built 2014 Load: 29.5 t ADT: 7,500

PETE WILES ROAD

Good

Over: LITTLE CATOCTIN CREEK

1.3 MI N OF MD RTE 17, Frederick, MD

Built 1973 Load: 29.5 t ADT: 485

NORTH HILL ROAD

Good

Over: WOLFDEN RUN

NORTH HILL ROAD, Garrett, MD

Built 2012 Load: 29.5 t ADT: 255

UTICA DISTRICT PAR

Good

Over: TRIBUTARY OF FISHING CRE

WEST OF OLD FREDERICK RD, Frederick, MD

Built 2020 Load: 29.8 t ADT: 200

COLD BOTTOM ROAD

Good

Over: BUFFALO CREEK

1.5 MI W OF I 83, Baltimore, MD

Built 1920 Load: 29.9 t ADT: 408

MARYLAND 560

Good

Over: NYDEGGER RUN

0.36 MILE NORTH OF US 50, Garrett, MD

Built 1932 Load: 29.9 t ADT: 1,930

BW PARKWAY

Good

Over: MD ROUTE 201

0.8 MILES SOUTH OF MD ROU, Prince George's, MD

Built 1953 Load: 29.9 t ADT: 80,000

MD 119

Good

Over: GREAT SENECA CREEK

2.0 MILES NORTH OF MD 124, Montgomery, MD

Built 1989 Load: 30.4 t ADT: 10,344

MD 831A

Good

Over: BRADDOCK RUN

0.06 MI N OF US 40AL, Allegany, MD

Built 1900 Load: 30.8 t ADT: 599

SAW MILL ROAD

Good

Over: BIG PIPE CREEK

0.5 MI EAST OF MD 97, Carroll, MD

Built 1974 Load: 30.8 t ADT: 54

BIXLER CHURCH ROAD

Good

Over: OHIO BRANCH

0.55 MI N OF BACKWOODS RD, Carroll, MD

Built 1974 Load: 30.8 t ADT: 675

REELS MILL ROAD

Good

Over: BUSH CREEK

0.25 MI N OF BALL RD, Frederick, MD

Built 1975 Load: 30.8 t ADT: 1,282

BOWIE ROAD

Good

Over: TRIB TO PATUXENT RIVER

0.2 MI EAST OF US 1 NB, Prince George's, MD

Built 1927 Load: 30.8 t ADT: 14,730

I-695 OL

Good

Over: BEAR CREEK

MILEPOST M46.2, Baltimore, MD

Built 1997 Load: 31.1 t ADT: 15,948

CARRS MILL ROAD

Good

Over: BEAR CABIN BRANCH

1.7 MILES N OF MD 152, Harford, MD

Built 2018 Load: 31.1 t ADT: 8,142

UPPER LEVEL ROADWA

Good

Over: LOWER LEVEL ROADWAY

BWI AIRPORT, Anne Arundel, MD

Built 1996 Load: 31.3 t ADT: 23,198

MD 75

Good

Over: LITTLE PIPE CREEK

0.06 MILE NORTH OF MR 84, Carroll, MD

Built 1960 Load: 31.3 t ADT: 3,821

MD 272

Good

Over: NORTHEAST CREEK

0.62 MILE NORTH OF MD 274, Cecil, MD

Built 2001 Load: 31.3 t ADT: 10,462

MD 28

Good

Over: WASHINGTON RUN

1.05 MILES EAST OF US 15, Frederick, MD

Built 2008 Load: 31.3 t ADT: 6,272

MD 560

Good

Over: GLADE RUN

2.33 MILES NORTH OF US 50, Garrett, MD

Built 1950 Load: 31.7 t ADT: 1,914

MD 213

Good

Over: WOODLAND CREEK

0.09 M S OF DAVES HILL RD, Kent, MD

Built 1950 Load: 31.7 t ADT: 4,211

Showing 3,901-3,950 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.