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

MD 97

Fair

Over: BIG PIPE CREEK

3.35 MILE NORTH OF MD 496, Carroll, MD

Built 1934 Load: 22.2 t ADT: 15,340

SNOWDEN RUN ROAD

Fair

Over: SNOWDEN RUN

1.89 MI W OF MINERAL HILL, Carroll, MD

Built 1974 Load: 22.2 t ADT: 503

US 15 NBR

Fair

Over: FISHING CREEK

0.07 MI N OF POWELL RD, Frederick, MD

Built 1972 Load: 22.2 t ADT: 43,080

HEAPS SCHOOL ROAD

Fair

Over: BROAD CREEK

0.3 MILES N OF MD 543, Harford, MD

Built 1965 Load: 22.2 t ADT: 405

BOTTOM ROAD

Fair

Over: LITTLE GUNPOWDER FALLS

1.8 MI NE OF FORK ROAD, Baltimore, MD

Built 1886 Load: 22.7 t ADT: 223

WESTERN RUN ROAD

Fair

Over: BLACKROCK RUN

0.1 MI E OF FALLS RD, Baltimore, MD

Built 1974 Load: 22.7 t ADT: 1,230

STABLERS CHURCH RO

Fair

Over: LITTLE FALLS

0.8 MI W OF YORK ROAD, Baltimore, MD

Built 1975 Load: 22.7 t ADT: 604

MARRIOTTSVILLE RD

Fair

Over: NORTH BRANCH OF PATAPSCO

AT BALT-CARROLL CO LINE, Baltimore, MD

Built 1976 Load: 22.7 t ADT: 5,500

PATTERSON AVENUE

Fair

Over: TRIBUTARY TO GWYNNS FALL

0.75 MI NE OF LIBERTY RD, Baltimore, MD

Built 1960 Load: 22.7 t ADT: 12,265

RIPPLE ROAD

Fair

Over: TRIBUTARY TO GWYNNS FALL

0.1 MI S OF LYNN HAVEN DR, Baltimore, MD

Built 1954 Load: 22.7 t ADT: 8,752

I-895

Fair

Over: CSXT RR

Milepost M7.65, Baltimore city, MD

Built 1957 Load: 22.7 t ADT: 72,510

BOYCE MILL ROAD

Fair

Over: GRAVELLY BRANCH

1.8 MI N OF MD RTE 314, Caroline, MD

Built 1919 Load: 22.7 t ADT: 2,025

DOLLYHYDE ROAD

Fair

Over: NORTH FORK LINGANORE CRK

0.6 MI N OF EMERS BURR RD, Frederick, MD

Built 1960 Load: 22.7 t ADT: 151

MD 135

Fair

Over: LITTLE YOUGHIOGHENY RIVE

0.12 MILE WEST OF MD 560, Garrett, MD

Built 1959 Load: 22.7 t ADT: 10,972

PARKLAWN ENTRANCE

Fair

Over: ROCK CREEK

RT 28 SOUTH OF ROCKVILLE, Montgomery, MD

Built 1950 Load: 22.7 t ADT: 27

KENT VILLAGE DRIVE

Fair

Over: CATTAIL BRANCH

0.35 MI S OF MD 202, Prince George's, MD

Built 1968 Load: 22.7 t ADT: 4,536

4 TH STREET

Fair

Over: BALD HILL BRANCH

0.12 MI W OF MAIN STREET, Prince George's, MD

Built 1964 Load: 22.7 t ADT: 608

29TH STREET

Fair

Over: TRIB TO NORTHWEST BRANCH

0.05 MI S OF ARUNDEL ROAD, Prince George's, MD

Built 1962 Load: 22.7 t ADT: 249

MD ROUTE 450

Fair

Over: BW PARKWAY

0.3 MILES NORTH OF MD ROU, Prince George's, MD

Built 1953 Load: 22.7 t ADT: 50,300

GAPLAND ROAD

Fair

Over: ISRAEL CREEK

0.08 MI W OF MD RTE 67, Washington, MD

Built 1922 Load: 22.7 t ADT: 160

MILLBROOK ROAD

Fair

Over: LITTLE ANTIETAM CREEK

0.4 MI W OF MD RTE 67, Washington, MD

Built 1965 Load: 22.7 t ADT: 1,467

US 13 BUS

Fair

Over: EAST BRANCH WICOMICO RIV

0.18 MILE S OF US 50BU, Wicomico, MD

Built 1937 Load: 22.7 t ADT: 22,900

CARROLL ROAD

Fair

Over: CARROLL BRANCH

0.5 MI S OF SPARKS RD, Baltimore, MD

Built 1879 Load: 23.1 t ADT: 2,534

KIDDS SCHOOLHOUSE

Fair

Over: PRETTYBOY RESERVOIR

0.7 MI E BECKLEYS RD, Baltimore, MD

Built 1932 Load: 23.1 t ADT: 124

MD 231

Fair

Over: PATUXENT RIVER

ON CHARLES CO LINE, Calvert, MD

Built 1952 Load: 23.1 t ADT: 12,021

BAUMGARDNER ROAD

Fair

Over: PINEY CREEK

0.70 MI N OF KEYSVILLE RD, Carroll, MD

Built 1982 Load: 23.1 t ADT: 99

GRIMVILLE ROAD

Fair

Over: GILLIS FALLS

0.04 MI N OF FLAG MARSH, Carroll, MD

Built 1981 Load: 23.1 t ADT: 280

GAITHER ROAD

Fair

Over: SOUTH BRANCH PATAPSCO RI

ON HOWARD COUNTY LINE, Carroll, MD

Built 1978 Load: 23.1 t ADT: 1,282

MD 213

Fair

Over: BOHEMIA RIVER

2.3 MILES SOUTH OF MD 310, Cecil, MD

Built 1988 Load: 23.1 t ADT: 6,317

MD 34

Fair

Over: ANTIETAM CREEK

1.2 MILES EAST OF MD 65, Washington, MD

Built 1958 Load: 23.1 t ADT: 4,951

POINT OF ROCKS ROA

Fair

Over: C&O CANAL

0.3 MILES FROM POTOMAC RI, Frederick, MD

Built 1890 Load: 23.2 t ADT: 159

LOWER LEVEL ROADWA

Fair

Over: PEDESTRIAN TUNNEL

BWI HOURLY GARAGE TO TERM, Anne Arundel, MD

Built 1976 Load: 23.6 t ADT: 22,093

MD 129

Fair

Over: NORTH BRANCH

1.81 MI N OF MD 130, Baltimore, MD

Built 1900 Load: 23.6 t ADT: 900

HOLLIFIELD ROAD

Fair

Over: PATAPSCO RIVER

0.1 MI S JOHNNYCAKE ROAD, Baltimore, MD

Built 1934 Load: 23.6 t ADT: 11,453

WESTCHESTER AVENUE

Fair

Over: NO. 9 TROLLEY TRAIL

0.2 MI N FREDERICK RD, Baltimore, MD

Built 1900 Load: 23.6 t ADT: 1,741

MD 311

Fair

Over: BROADWAY BRANCH

1.47 MILE NORTH OF MD 287, Caroline, MD

Built 1950 Load: 23.6 t ADT: 3,460

MD 75

Fair

Over: SAMS CREEK

ON FREDERICK CO LINE, Carroll, MD

Built 1972 Load: 23.6 t ADT: 2,151

MD 140

Fair

Over: BIG PIPE CREEK

0.91 MILE SOUTH OF MD 832, Carroll, MD

Built 1964 Load: 23.6 t ADT: 13,070

MD 144FA & CO RD

Fair

Over: LONG BRANCH

0.504 M W OF CAR. CO LINE, Frederick, MD

Built 1954 Load: 23.6 t ADT: 13,511

MD 383

Fair

Over: CATOCTIN CREEK

1.52 MILES N OF MD 180, Frederick, MD

Built 1953 Load: 23.6 t ADT: 1,550

UTICA ROAD

Fair

Over: FISHING CREEK

0.12 MI W OLD FREDERICK R, Frederick, MD

Built 1860 Load: 23.6 t ADT: 298

ACCIDENT FRIENDSVI

Fair

Over: BEAR CREEK

0.01 MI S ACC FRNDVLLE RD, Garrett, MD

Built 2002 Load: 23.6 t ADT: 120

MD 136

Fair

Over: DEER CREEK

2.64 MILES SOUTH OF US 1, Harford, MD

Built 1931 Load: 23.6 t ADT: 9,984

MD 382

Fair

Over: MATAPONI CREEK

0.08 MI S OF MATTAPONI RD, Prince George's, MD

Built 1930 Load: 23.6 t ADT: 4,500

MARYLAND RT.458-SI

Fair

Over: SUITLAND PARKWAY

1.8 MILES FROM SUITLAND R, Prince George's, MD

Built 1943 Load: 23.6 t ADT: 42,725

L.Q. POWELL ROAD

Fair

Over: EAST CREEK

0.5 MI W OF TULLS CORNER, Somerset, MD

Built 1975 Load: 23.6 t ADT: 210

US 40

Fair

Over: LICKING CREEK

0.26 MILE EAST OF IS 70, Washington, MD

Built 1938 Load: 23.6 t ADT: 1,455

US 50

Fair

Over: SINEPUXENT BAY

0.17 MILE WEST OF MD 528, Worcester, MD

Built 1942 Load: 23.9 t ADT: 33,920

MD 173

Fair

Over: STONEY CREEK

0.16 MILE SOUTH OF MD 642, Anne Arundel, MD

Built 1947 Load: 24.0 t ADT: 15,071

MD 181(SIXTH ST)

Fair

Over: SPA CREEK

ANNAPOLIS MD., Anne Arundel, MD

Built 1946 Load: 24.0 t ADT: 19,251

Showing 1,301-1,350 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.