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

US 301 NB

Fair

Over: RED LION BRANCH

0.27 MILE NORTH OF MD 290, Queen Anne's, MD

Built 1955 Load: 75.7 t ADT: 5,500

MD 2

Fair

Over: CABIN BRANCH

0.03 MI N OF MD 711, Anne Arundel, MD

Built 1968 Load: 76.2 t ADT: 46,601

BUCKINGHAM ROAD

Fair

Over: GWYNNS FALLS

0.4 MI NE LIBERTY RD, Baltimore, MD

Built 1972 Load: 76.2 t ADT: 2,209

MD 733A

Fair

Over: SAVAGE RIVER

.01 MILE WEST OF US 40AL, Garrett, MD

Built 1840 Load: 76.2 t ADT: 4

MD 662

Fair

Over: BRANCH OF WYE RIVER

.06 M N OF TALBOT CO LINE, Queen Anne's, MD

Built 1914 Load: 76.2 t ADT: 860

MD 242

Fair

Over: LOCUST RUN

1.62 MILES SOUTH OF MD 5, St. Mary's, MD

Built 1929 Load: 76.2 t ADT: 2,371

PATAPSCO AVENUE

Fair

Over: CSX

1 MI E OF I-95, Baltimore city, MD

Built 1962 Load: 76.6 t ADT: 12,100

NORTH BEACH ROAD

Fair

Over: HUNTING CREEK

CUNN. FALLS STATE PARK, Frederick, MD

Built 1980 Load: 76.6 t ADT: 100

SHADY GROVE RD WB

Fair

Over: CSXT RAILROAD

0.5 MI EAST OF MD 355, Montgomery, MD

Built 1976 Load: 76.6 t ADT: 35,374

CHERRYWOOD LANE

Fair

Over: INDIAN CREEK

0.9 MI NORTH OF MD 193, Prince George's, MD

Built 1989 Load: 76.6 t ADT: 7,353

PINDER HILL ROAD

Fair

Over: BROWNS BRANCH

0.73 MI. NE OF MD 300, Queen Anne's, MD

Built 1986 Load: 76.6 t ADT: 1,215

WILSON ROAD

Fair

Over: NORTH BRANCH OF THE POTO

ON WEST VIRGINIA LINE, Garrett, MD

Built 1942 Load: 77.1 t ADT: 250

HARPERS FERRY ROAD

Fair

Over: ANTIETAM CREEK

ANTIETAM MD, Washington, MD

Built 1832 Load: 77.1 t ADT: 720

RED RUN BOULEVARD

Fair

Over: RED RUN

0.6 MI SOUTH OF I-795, Baltimore, MD

Built 1997 Load: 77.5 t ADT: 10,305

OLD TELEGRAPH ROAD

Fair

Over: GREAT BOHEMIA CREEK

0.04 MI N OF BUNKER HI R, Cecil, MD

Built 2002 Load: 77.5 t ADT: 1,456

MD 2

Fair

Over: MARLEY CREEK

0.13 M N OF PHELPS AVENUE, Anne Arundel, MD

Built 1936 Load: 78.0 t ADT: 23,961

US 40

Fair

Over: MILL CREEK

0.83 MILE EAST OF MD 222, Cecil, MD

Built 1941 Load: 78.0 t ADT: 22,280

BIG RUN ROAD

Fair

Over: BIG RUN

0.16 MI NW SAVAGE RIVER R, Garrett, MD

Built 1935 Load: 78.0 t ADT: 55

BW PARKWAY

Fair

Over: MD ROUTE 212

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

Built 1953 Load: 78.0 t ADT: 80,000

MD 222

Fair

Over: OCTORARO CREEK

0.88 MILE SOUTH OF US 1, Cecil, MD

Built 1900 Load: 78.5 t ADT: 2,959

MILT SUMMERS ROAD

Fair

Over: TRIB. OF CATOCTIN CREEK

0.3 MI W OF MT TABOR RD, Frederick, MD

Built 1977 Load: 78.5 t ADT: 1,210

MD 650

Fair

Over: NORTHWEST BRANCH

0.05 MILE SOUTH OF MD 320, Prince George's, MD

Built 1939 Load: 78.5 t ADT: 40,653

I-395 SB

Fair

Over: HAMBURG ST

Milepost 1.4, Baltimore city, MD

Built 1982 Load: 78.9 t ADT: 30,420

SMITHVILLE ROAD

Fair

Over: BEAVERDAM CREEK

4.7 MILES S. OF MD. 16, Dorchester, MD

Built 1985 Load: 78.9 t ADT: 143

HIP ROOF ROAD

Fair

Over: SPICER CREEK

2.53 MILES W. OF MD. 335, Dorchester, MD

Built 1987 Load: 78.9 t ADT: 304

ST JOHN ROAD

Fair

Over: ST JOHN CREEK

0.07 MI. E. OF PUNCH IS R, Dorchester, MD

Built 1984 Load: 78.9 t ADT: 82

BISHOPS HEAD ROAD

Fair

Over: GOOSE CREEK

0.37 MI S OF TODDVILLE RD, Dorchester, MD

Built 1989 Load: 78.9 t ADT: 133

WESLEY CHURCH ROAD

Fair

Over: FARM CREEK

0.68 MI. N. OF TODDVILLE, Dorchester, MD

Built 1985 Load: 78.9 t ADT: 349

ELLIOTT ISLAND ROA

Fair

Over: POKATA CREEK

7.93 MI.S. OF LEWIS W. RD, Dorchester, MD

Built 1981 Load: 78.9 t ADT: 204

WALTERS MILL ROAD

Fair

Over: STOUT BOTTLE BRANCH

0.2 MILES W OF MD 543, Harford, MD

Built 1959 Load: 78.9 t ADT: 508

MD 117

Fair

Over: GUNNERS BRANCH

1.21 MILES EAST OF MD 118, Montgomery, MD

Built 1951 Load: 78.9 t ADT: 18,752

CHANTILLY LANE

Fair

Over: LOTTSFORD BRANCH

0.63 MI WEST OF MD 193, Prince George's, MD

Built 1979 Load: 78.9 t ADT: 2,309

CHAPEL POINT RD

Fair

Over: WILLS BRANCH

1.1 MI S LOCUST GROVE DR, Charles, MD

Built 1997 Load: 79.4 t ADT: 838

CHELSEA ROAD

Fair

Over: AMTRAK RAILROAD

0.3 MILES SE OF MD 159, Harford, MD

Built 1981 Load: 79.4 t ADT: 2,130

LOUDON AVENUE

Fair

Over: UNNAMED STREAM

1.5 MI EAST OF RTE 1, Howard, MD

Built 2004 Load: 79.4 t ADT: 540

RIDINGS WAY

Fair

Over: UNNAMED STREAM

0.4 Mile West of MD 1, Howard, MD

Built 1996 Load: 79.4 t ADT: 100

ROYAL OAK ROAD

Fair

Over: PETERS CREEK

1 MI NW OF MD RTE 349, Wicomico, MD

Built 1995 Load: 79.4 t ADT: 718

INDIA AVENUE

Fair

Over: COULTON RUN

0.13 MI WEST OF US RT. 1, Baltimore, MD

Built 1978 Load: 79.8 t ADT: 100

MD 314

Fair

Over: CHOPTANK RIVER

0.04 MILE WEST OF MD 313, Caroline, MD

Built 1995 Load: 79.8 t ADT: 2,621

SPARKS MILL ROAD

Fair

Over: GRANNY FINLEY BRANCH

1.1 MI. WEST OF MD 213, Queen Anne's, MD

Built 1985 Load: 79.8 t ADT: 221

COLLEGE ROAD

Fair

Over: SAINT JAMES RUN

1.0 MI NE OF MD RTE 68, Washington, MD

Built 1950 Load: 79.8 t ADT: 1,006

WATERSVILLE ROAD

Fair

Over: SOUTH BRANCH OF PATAPSCO

WATERSVILLE RD 2.81, Carroll, MD

Built 1976 Load: 80.3 t ADT: 938

MD 404 EB

Fair

Over: NORWICH CREEK

ON TALBOT CO LINE, Queen Anne's, MD

Built 1949 Load: 80.7 t ADT: 13,631

CLARKS LANE

Fair

Over: WESTERN RUN

0.1 MI N CROSS COUNTRY BL, Baltimore city, MD

Built 1973 Load: 81.2 t ADT: 30,841

BIG WOODS ROAD

Fair

Over: LITTLE MONOCACY RIVER

0.6 MI S OF JCT SR 28, Montgomery, MD

Built 1919 Load: 81.2 t ADT: 345

ALLEN ROAD

Fair

Over: PASSERDYKE CREEK

ON SOMERSET CO LINE, Wicomico, MD

Built 1991 Load: 81.2 t ADT: 1,196

RASPE AVENUE

Fair

Over: REDHOUSE CREEK

0.79 MILES EAST OF US 1, Baltimore, MD

Built 1948 Load: 81.6 t ADT: 604

US 15 BU

Fair

Over: FLAT RUN

0.75 MILE SOUTH OF US 15, Frederick, MD

Built 1927 Load: 81.6 t ADT: 1,820

RACE TRACK ROAD

Fair

Over: TRIB OF PATUXENT RIVER

1000 FT S BOWIE RACE TRCK, Prince George's, MD

Built 1969 Load: 81.6 t ADT: 11,670

MD 68

Fair

Over: ANTIETAM CREEK

1.9 MILES EAST OF MD 65, Washington, MD

Built 1833 Load: 81.6 t ADT: 2,592

Showing 3,451-3,500 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.