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

ROE ROAD

Fair

Over: RED LION BRANCH

0.4 MI NW OF MD 290, Queen Anne's, MD

Built 1992 Load: 35.4 t ADT: 110

MD 5

Fair

Over: FISHERMAN CREEK

0.31 MILE NORTH OF MD 584, St. Mary's, MD

Built 1936 Load: 35.4 t ADT: 7,244

MD 245

Fair

Over: BROOKS RUN

1.71 MILES S OF MD 235, St. Mary's, MD

Built 1950 Load: 35.4 t ADT: 8,324

US 50

Fair

Over: TRIB TO POTTS MILL CREEK

1.26 MILES E OF MD 662B, Talbot, MD

Built 1945 Load: 35.4 t ADT: 31,938

US 40

Fair

Over: LANDIS SPRING BRANCH

0.61 MILE EAST OF IS 70, Washington, MD

Built 1936 Load: 35.4 t ADT: 10,742

MD 60

Fair

Over: MARSH RUN

2.87 MILES WEST OF MD 62, Washington, MD

Built 1900 Load: 35.4 t ADT: 12,172

CONWAY ROAD

Fair

Over: LITTLE PATUXENT RIVER

0.43 MI W OF MD 3, Anne Arundel, MD

Built 1966 Load: 35.8 t ADT: 9,663

MD 7

Fair

Over: HONEYGO RUN

0.07 MI S OF EBENEZER RD, Baltimore, MD

Built 1950 Load: 35.8 t ADT: 16,450

MD 147

Fair

Over: LITTLE GUNPOWDER FALLS

ON HARFORD CO LINE, Baltimore, MD

Built 1928 Load: 35.8 t ADT: 10,192

MD 695 OL

Fair

Over: AMTRAK & BACK RIVER

0.75 MILE SOUTH OF MD 150, Baltimore, MD

Built 1968 Load: 35.8 t ADT: 49,829

BEAVER DAM ROAD

Fair

Over: OREGON BRANCH

0.3 MI S OF SHAWAN ROAD, Baltimore, MD

Built 1952 Load: 35.8 t ADT: 6,171

SULPHUR SPRING ROA

Fair

Over: EAST BRANCH HERBERT RUN

INTER SELMA & SUL SPRNG, Baltimore, MD

Built 1962 Load: 35.8 t ADT: 20,845

FITCH AVENUE

Fair

Over: TRIBUTARY TO STEMMERS RU

0.2 MI E OF BELAIR RD, Baltimore, MD

Built 1979 Load: 35.8 t ADT: 2,860

FREDERICK AVENUE

Fair

Over: AMTRAK

AT JCT WITH HILTON ST., Baltimore city, MD

Built 1925 Load: 35.8 t ADT: 2,270

MD 7

Fair

Over: BYNUM RUN

0.17 MILE SOUTH OF MD 136, Harford, MD

Built 1923 Load: 35.8 t ADT: 11,350

MD 132B

Fair

Over: SWAN CREEK

0.33 MILE SOUTH OF US 40, Harford, MD

Built 1930 Load: 35.8 t ADT: 4,030

US 1

Fair

Over: DORSEY RUN

0.04 MILE S OF MD 958P, Howard, MD

Built 1929 Load: 35.8 t ADT: 21,992

MD 32 WBR

Fair

Over: MIDDLE PATUXENT RIVER

0.89 MILE NORTH OF US 29, Howard, MD

Built 1985 Load: 35.8 t ADT: 48,061

RIVER ROAD

Fair

Over: TRIBUTARY OF PATAPSCO RI

PATAPSCO VALLEY ST PARK, Howard, MD

Built 1997 Load: 35.8 t ADT: 100

WOODFIELD SCHOOL R

Fair

Over: GREAT SENECA CREEK

0.5 MILES NORTH OF MD 124, Montgomery, MD

Built 1974 Load: 35.8 t ADT: 160

MD 214

Fair

Over: WESTERN BRANCH

0.48 MILE WEST OD MD 193, Prince George's, MD

Built 1987 Load: 35.8 t ADT: 48,951

US 301 SB

Fair

Over: WESTERN BRANCH

0.12 MILE S OF MD 976C, Prince George's, MD

Built 1949 Load: 35.8 t ADT: 35,812

MD 410

Fair

Over: AMTRAK, WMATA, BEAVER CR

0.17 MILE EAST OF US 50, Prince George's, MD

Built 1988 Load: 35.8 t ADT: 20,822

RITCHIE ROAD

Fair

Over: TRIBUTARY TO SOUTHWEST

0.37 MI SOUTH OF MD 214, Prince George's, MD

Built 1980 Load: 35.8 t ADT: 21,862

LOTTSFORD VISTA RD

Fair

Over: LOTTSFORD BRANCH

2.23 MI SOUTH OF MD 704, Prince George's, MD

Built 1999 Load: 35.8 t ADT: 7,518

WILLIAM BEANES RD

Fair

Over: FEDERAL SPRING BRANCH

1.1 MI EAST OF OSBORNE RD, Prince George's, MD

Built 1964 Load: 35.8 t ADT: 763

STUART LANE

Fair

Over: TRIBUTARY TO PISCATAWAY

0.2 MI WEST OF MD 5, Prince George's, MD

Built 1993 Load: 35.8 t ADT: 1,571

MD 302

Fair

Over: BR OF RED LION BRANCH

0.13 MILE WEST OF MD 313, Queen Anne's, MD

Built 1974 Load: 35.8 t ADT: 3,001

MD 413

Fair

Over: BIG ANNEMESSEX RIVER

2.59 MILES S OF MD 361, Somerset, MD

Built 1949 Load: 35.8 t ADT: 5,670

US 13 NB

Fair

Over: WAGRAM CREEK

0.56 M N OF VA STATE LINE, Worcester, MD

Built 1954 Load: 35.8 t ADT: 12,933

MD 639 WILLIAMS RD

Fair

Over: EVITTS CREEK

1.51 MILES SOUTH OF IS 68, Allegany, MD

Built 1966 Load: 36.3 t ADT: 2,530

MD 794

Fair

Over: GALLOWAY CREEK

0.76 MILE SOUTH OF MD 408, Anne Arundel, MD

Built 1997 Load: 36.3 t ADT: 1,571

MD 423

Fair

Over: BRANCH OF HERRING BAY

2.44 MILE EAST OF MD 2, Anne Arundel, MD

Built 1989 Load: 36.3 t ADT: 1,492

PATUXENT ROAD

Fair

Over: LITTLE PATUXENT RIVER

1.9 MI S OF WAUGH CH RD, Anne Arundel, MD

Built 1966 Load: 36.3 t ADT: 7,376

MD 139

Fair

Over: TOWSON RUN

0.05 M N/TOWSONTOWN BLVD, Baltimore, MD

Built 1957 Load: 36.3 t ADT: 39,381

MARRIOTTSVILLE ROA

Fair

Over: FALLS RUN

0.28 MI W OF W CHAPEL RD, Baltimore, MD

Built 1984 Load: 36.3 t ADT: 4,050

RAMP 'X'

Fair

Over: OWINGS MILLS BOULEVARD

0.4 MI SW OF IS 795, Baltimore, MD

Built 1986 Load: 36.3 t ADT: 3,131

COVERED BRIDGE ROA

Fair

Over: TRIBUTARY TO GUNPOWDER F

0.25 NE OF NORTH END MD41, Baltimore, MD

Built 1960 Load: 36.3 t ADT: 1,947

MD 16

Fair

Over: MILL CREEK

0.01 MILE NORTH OF MD 617, Caroline, MD

Built 1968 Load: 36.3 t ADT: 5,417

MD 404 WB

Fair

Over: WATTS CREEK

0.25 MILE WEST OF MD 16, Caroline, MD

Built 2006 Load: 36.3 t ADT: 18,941

GRAVE RUN ROAD

Fair

Over: GUNPOWDER FALLS

0.14 MI N OF ROLLER ROAD, Carroll, MD

Built 1970 Load: 36.3 t ADT: 660

US 40

Fair

Over: TRIB TO HAWBOTTOM BRANCH

0.29 MI E OF HOLLOW ROAD, Frederick, MD

Built 1936 Load: 36.3 t ADT: 5,522

DOUBS ROAD

Fair

Over: TUSCARORA CREEK

1.23 MI W OF NEW DESIGN R, Frederick, MD

Built 1950 Load: 36.3 t ADT: 327

US 219

Fair

Over: WILSON RUN

0.025 M N OF E GREEN ST, Garrett, MD

Built 1925 Load: 36.3 t ADT: 10,524

SAVAGE RIVER ROAD

Fair

Over: SAVAGE RIVER

0.9 MI NW OF MD 135, Garrett, MD

Built 2007 Load: 36.3 t ADT: 285

MD 24

Fair

Over: DEER CREEK

2.17 MILES S OF MD 165, Harford, MD

Built 1934 Load: 36.3 t ADT: 3,930

SPESUTIA ROAD

Fair

Over: CRANBERRY RUN

0.2 MILES N OF MD 159, Harford, MD

Built 1966 Load: 36.3 t ADT: 4,242

PALMER ROAD

Fair

Over: ROMNEY CREEK

80 YDS W OF OLD BALTIMORE, Harford, MD

Built 1942 Load: 36.3 t ADT: 100

US 1

Fair

Over: BRANCH OF DORSEY RUN

1.03 MILES S OF MD 958P, Howard, MD

Built 1929 Load: 36.3 t ADT: 21,992

MD 94

Fair

Over: CABIN BRANCH

1.03 MILES N OF MONT CO, Howard, MD

Built 1970 Load: 36.3 t ADT: 3,022

Showing 2,101-2,150 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.