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 121

Fair

Over: LITTLE SENECA LAKE

0.39 MILE NORTH OF MD 117, Montgomery, MD

Built 1984 Load: 38.1 t ADT: 3,571

IS 495

Fair

Over: Clara Barton Parkway EB

0.34 MILE EAST OF VA LINE, Montgomery, MD

Built 1963 Load: 38.1 t ADT: 228,218

IS 495

Fair

Over: CEDAR LANE

0.65 MILE EAST OF MD 355, Montgomery, MD

Built 1964 Load: 38.1 t ADT: 238,050

JONES MILL ROAD

Fair

Over: ROCK CREEK

0.1 MI S FORSYTHE AVENUE, Montgomery, MD

Built 1969 Load: 38.1 t ADT: 14,669

DAYTON STREET

Fair

Over: TRIBUTARY TO SLIGO CREEK

825 FEET EAST OF MD 97, Montgomery, MD

Built 1965 Load: 38.1 t ADT: 830

LITTLE FALLS PARKW

Fair

Over: WILLET BRANCH

0.1 MI N DORSET AVE, Montgomery, MD

Built 1958 Load: 38.1 t ADT: 16,840

FLOWER AVENUE

Fair

Over: SLIGO CREEK

0.28 MI SE OF MONT CO, Montgomery, MD

Built 1930 Load: 38.1 t ADT: 1,774

MD 201

Fair

Over: BRIER DITCH

0.11 MI N OF SARVIS AVE, Prince George's, MD

Built 1950 Load: 38.1 t ADT: 33,330

MD 202

Fair

Over: WESTERN BRANCH

0.79 MILE NORTH OF MD 193, Prince George's, MD

Built 1959 Load: 38.1 t ADT: 26,592

IS 495 RAMP 'F'

Fair

Over: PAINT BRANCH

1.11 M E OF MONT CO LINE, Prince George's, MD

Built 1967 Load: 38.1 t ADT: 319

TUCKER ROAD

Fair

Over: HENSON CREEK

0.35 MI N OF FERGUSON LA, Prince George's, MD

Built 1979 Load: 38.1 t ADT: 7,120

COVENTRY PARISH RO

Fair

Over: REHOBETH BRANCH

0.3 MI S OF REHOBETH ROAD, Somerset, MD

Built 1985 Load: 38.1 t ADT: 250

PEGG ROAD

Fair

Over: BRANCH JARBOESVILLE RUN

.8 MI CHANCELLORS RUN RD, St. Mary's, MD

Built 1990 Load: 38.1 t ADT: 9,574

MD 34

Fair

Over: TRIB TO LIT ANTIETAM CRK

0.70 MILE WEST OF US 40AL, Washington, MD

Built 1957 Load: 38.1 t ADT: 6,981

MANOR CHURCH ROAD

Fair

Over: ANTIETAM CREEK

2.65 MI SE OF MD RTE 65, Washington, MD

Built 1982 Load: 38.1 t ADT: 365

MD 376

Fair

Over: AYERS CREEK

0.71 MILE WEST OF MD 611, Worcester, MD

Built 1967 Load: 38.1 t ADT: 4,122

IS 68

Fair

Over: EVITTS CREEK

0.21 M E OF BR NO 0109900, Allegany, MD

Built 1937 Load: 38.5 t ADT: 26,680

MD 295 SB

Fair

Over: AMTRAK, STONY RUN

0.14 MI S OF IS 195, Anne Arundel, MD

Built 1950 Load: 38.5 t ADT: 67,307

8TH AVENUE NW

Fair

Over: SAWMILL CREEK

0.2 MI W OF MD 3, Anne Arundel, MD

Built 1972 Load: 38.5 t ADT: 12,944

UPPER LEVEL ROADWA

Fair

Over: LOWER LEVEL ROADWAY

BWI AIRPORT, Anne Arundel, MD

Built 1977 Load: 38.5 t ADT: 11,760

MD 7

Fair

Over: LITTLE GUNPOWDER FALLS

ON HARFORD CO LINE, Baltimore, MD

Built 1928 Load: 38.5 t ADT: 8,520

MD 128

Fair

Over: SLADE RUN

3.05 MI E OF MD 30, Baltimore, MD

Built 1990 Load: 38.5 t ADT: 2,991

RUXTON ROAD

Fair

Over: JONES FALLS

0.02 MI W OF MD 25, Baltimore, MD

Built 1961 Load: 38.5 t ADT: 5,329

MT. WILSON LANE

Fair

Over: GWYNNS FALLS

0.03 MI S OF MD 400, Baltimore, MD

Built 1973 Load: 38.5 t ADT: 1,800

SOLOMONS ISLAND RD

Fair

Over: THE NARROWS

ON SOLOMONS ISLAND, Calvert, MD

Built 1958 Load: 38.5 t ADT: 4,126

ROY SHAFER ROAD

Fair

Over: CONE BRANCH

AT BENNIES HILL RD INT, Frederick, MD

Built 1982 Load: 38.5 t ADT: 105

POFFENBERGER ROAD

Fair

Over: LEWIS MILL BRANCH

0.75 MI W OF OLD MIDDLETO, Frederick, MD

Built 1982 Load: 38.5 t ADT: 32

MD 165

Fair

Over: LITTLE DEER CREEK

2.35 MILES SOUTH OF MD 24, Harford, MD

Built 1930 Load: 38.5 t ADT: 6,673

BYNUM ROAD

Fair

Over: BYNUM RUN

0.5 MILES NE OF MD 24, Harford, MD

Built 1976 Load: 38.5 t ADT: 4,310

POTEET ROAD

Fair

Over: EAST BRANCH/WINTERS RUN

0.01 M W OF PHILLIPS M RD, Harford, MD

Built 1995 Load: 38.5 t ADT: 35

KENNEDYVILLE ROAD

Fair

Over: MORGAN CREEK

0.8 MI SE OF MD RTE 213, Kent, MD

Built 2002 Load: 38.5 t ADT: 265

MD 320

Fair

Over: NORTHWEST BRANCH

0.05 MILE SOUTH OF MD 650, Prince George's, MD

Built 1910 Load: 38.5 t ADT: 21,112

IS 95/IS 495

Fair

Over: POTOMAC RIVER

ON VIRGINIA LINE, Prince George's, MD

Built 2006 Load: 38.5 t ADT: 128,275

MD 405

Fair

Over: SOUTHEAST CREEK

0.1 MILE SOUTH OF MD 19, Queen Anne's, MD

Built 1933 Load: 38.5 t ADT: 1,842

WHITON CROSSING RD

Fair

Over: POCOMOKE RIVER

0.19 MILES EAST OF MD 354, Worcester, MD

Built 1996 Load: 38.5 t ADT: 138

MD 51

Fair

Over: POTOMAC RIVER

ON WEST VIRGINIA LINE, Allegany, MD

Built 1987 Load: 39.0 t ADT: 1,502

MD 256

Fair

Over: TRACEYS CREEK

1.73 MI W OF MD 258, Anne Arundel, MD

Built 1975 Load: 39.0 t ADT: 3,355

BELL BRANCH ROAD

Fair

Over: BELL BRANCH

1.2 MI EAST OF RTE 424, Anne Arundel, MD

Built 1970 Load: 39.0 t ADT: 656

MD 25

Fair

Over: JONES FALLS

0.06 MILE SOUTH OF MD 133, Baltimore, MD

Built 1932 Load: 39.0 t ADT: 10,911

US 40

Fair

Over: STEMMERS RUN

0.39 MILES EAST OF I-695, Baltimore, MD

Built 1935 Load: 39.0 t ADT: 54,850

FRANCIS AVENUE

Fair

Over: WEST BRANCH OF HERBERT R

0.06 MI W OF OREGON AVE, Baltimore, MD

Built 1955 Load: 39.0 t ADT: 8,130

OWINGS MILLS BOULE

Fair

Over: REISTERSTOWN ROAD (MD 14

0.4 MI NW OF OWINGS MILLS, Baltimore, MD

Built 1986 Load: 39.0 t ADT: 29,024

IS 95 VIADUCT NB

Fair

Over: CONRAIL YARD

Milepost M56.9, Baltimore city, MD

Built 1980 Load: 39.0 t ADT: 64,313

I-695 IL

Fair

Over: CHEMICAL ROAD

0.02 MI N OF MD RTE 173, Baltimore city, MD

Built 1972 Load: 39.0 t ADT: 21,765

MD 2 SB

Fair

Over: HUNTING CREEK

.086 MILE NORTH OF MD 263, Calvert, MD

Built 1992 Load: 39.0 t ADT: 46,798

MD 260

Fair

Over: HALL CREEK

0.32 MILE EAST OF MD 778, Calvert, MD

Built 1951 Load: 39.0 t ADT: 13,581

MD 75

Fair

Over: LITTLE PIPE CREEK

0.18 MI S OF UNION BRIDGE, Carroll, MD

Built 1922 Load: 39.0 t ADT: 4,051

US 40 EB

Fair

Over: LITTLE NORTHEAST CREEK

0.65 MILE EAST OF MD 272, Cecil, MD

Built 1939 Load: 39.0 t ADT: 14,917

US 40 WB

Fair

Over: LITTLE NORTHEAST CREEK

0.65 MILE EAST OF MD 272, Cecil, MD

Built 1939 Load: 39.0 t ADT: 14,332

MD 327

Fair

Over: AMTRAK

0.17 MILE EAST OF MD 7B, Cecil, MD

Built 1942 Load: 39.0 t ADT: 499

Showing 2,251-2,300 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.