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

WALKER MILL ROAD

Fair

Over: SOUTHWEST BRANCH

0.18 MI W OF RITCHIE ROAD, Prince George's, MD

Built 1969 Load: 40.4 t ADT: 30,734

CROOM STATION ROAD

Fair

Over: CHARLES BRANCH

1.1 MILES SOUTH OF US 301, Prince George's, MD

Built 1950 Load: 40.4 t ADT: 5,634

US 13 SB

Fair

Over: MANOKIN RIVER

0.05 MILE NORTH OF MD 363, Somerset, MD

Built 1964 Load: 40.4 t ADT: 22,370

MD 667

Fair

Over: REHOBETH BRANCH

4.96 MILES WEST OF US 13, Somerset, MD

Built 1976 Load: 40.4 t ADT: 2,999

IS 70 EB

Fair

Over: ANTIETAM CREEK

0.57 MILE WEST OF US 40AL, Washington, MD

Built 1968 Load: 40.4 t ADT: 62,740

IS 70 WB

Fair

Over: ANTIETAM CREEK

0.57 MILE WEST OF US 40AL, Washington, MD

Built 1968 Load: 40.4 t ADT: 62,740

US 40

Fair

Over: ANTIETAM CREEK

AT EASTERN BOULEVARD, Washington, MD

Built 1966 Load: 40.4 t ADT: 20,819

BURHANS BOULEVARD

Fair

Over: NORFOLK SOUTHERN RAILROA

0.68 MI N OF VIRGINIA AVE, Washington, MD

Built 1962 Load: 40.4 t ADT: 11,223

MD 374

Fair

Over: LIBERTYTOWN BR

4.01 M E OF WICOMICO CO, Worcester, MD

Built 1931 Load: 40.4 t ADT: 1,030

MD 313

Fair

Over: CHESTER RIVER

ON KENT CO LINE, Queen Anne's, MD

Built 1961 Load: 40.5 t ADT: 1,964

MD 758

Fair

Over: TRIB TO STONY RUN

WEST OF 195, Anne Arundel, MD

Built 2005 Load: 40.8 t ADT: 700

MD 45

Fair

Over: FOURTH MINE BRANCH

0.14 M N OF BR NO 0304600, Baltimore, MD

Built 1930 Load: 40.8 t ADT: 5,340

JEROME JAY DRIVE

Fair

Over: BEAVERDAM RUN, BAISMAN R

0.3 MI SE OF IVY HILL RD, Baltimore, MD

Built 1988 Load: 40.8 t ADT: 700

I-83 RAMP C

Fair

Over: GUILFORD AVE

0.4 MI N OF MADISON ST, Baltimore city, MD

Built 1976 Load: 40.8 t ADT: 7,014

IS 95 VIADUCT NB

Fair

Over: CONRAIL YARDS

Milepost M56.7, Baltimore city, MD

Built 1982 Load: 40.8 t ADT: 60,485

MD 2 NB

Fair

Over: HUNTING CREEK

.086 MILE NORTH OF MD 263, Calvert, MD

Built 1969 Load: 40.8 t ADT: 18,785

ADAMS MILL ROAD

Fair

Over: LITTLE PIPE CREEK

.03 MI E OF ROOPS MILL RD, Carroll, MD

Built 1974 Load: 40.8 t ADT: 75

MD 5 NB

Fair

Over: ZEKIAH SWAMP

0.44 MILE SOUTH OF MD 488, Charles, MD

Built 1966 Load: 40.8 t ADT: 37,490

MD 5 NB

Fair

Over: ZEKIAH SWAMP

0.54 MILE SOUTH OF MD 488, Charles, MD

Built 1966 Load: 40.8 t ADT: 37,490

MD 16

Fair

Over: SLAUGHTER CREEK

AT TAYLOR'S ISLAND, Dorchester, MD

Built 1998 Load: 40.8 t ADT: 652

PLEASANT VIEW RD

Fair

Over: TUSCARORA CREEK

1.14 MI N OF MD RTE 28, Frederick, MD

Built 1982 Load: 40.8 t ADT: 191

UNDERWOOD ROAD

Fair

Over: CHERRY CREEK

0.5 MI N OF MANSFIELD RD, Garrett, MD

Built 1998 Load: 40.8 t ADT: 1,185

US 40

Fair

Over: OTTER POINT CREEK

0.10 MILE EAST OF MD 24, Harford, MD

Built 1935 Load: 40.8 t ADT: 21,093

MD 24 SBR

Fair

Over: CSX TRANS.

0.3 MILE SOUTH OF MD 7, Harford, MD

Built 1970 Load: 40.8 t ADT: 20,242

MD 24

Fair

Over: TRIB. TO OTTER POINT CRE

0.13 MILE NORTH OF MD 755, Harford, MD

Built 1969 Load: 40.8 t ADT: 24,240

MD 103

Fair

Over: DEEP RUN

0.89 MILE SOUTH OF US 1, Howard, MD

Built 1937 Load: 40.8 t ADT: 8,191

GLEN MILL ROAD

Fair

Over: PINEY BRANCH

0.6 MI N OF GLEN RD., Montgomery, MD

Built 1960 Load: 40.8 t ADT: 4,190

MOUTH OF MONOCACY

Fair

Over: CSXT RAILROAD

0.9 MILES WEST OF MD 28, Montgomery, MD

Built 2007 Load: 40.8 t ADT: 300

RIFFLE FORD ROAD

Fair

Over: GREAT SENECA CREEK

1.8 MILES EAST OF MD 118, Montgomery, MD

Built 1952 Load: 40.8 t ADT: 4,131

BW PARKWAY (SBL)

Fair

Over: MD ROUTE 197 (WBL)

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

Built 2001 Load: 40.8 t ADT: 88,000

US 13

Fair

Over: PASSERDYKE CREEK

ON WICOMICO CO LINE, Somerset, MD

Built 1900 Load: 40.8 t ADT: 27,695

MD 822

Fair

Over: LORETTO BRANCH

0.6 MILE EAST OF US 13, Somerset, MD

Built 2002 Load: 40.8 t ADT: 2,000

FRENCHTOWN ROAD

Fair

Over: GOOSE CREEK

1.2 MI SE OF RUMBLEY, Somerset, MD

Built 1983 Load: 40.8 t ADT: 64

US 40 ALT

Fair

Over: ANTIETAM CREEK

0.42 M E OF KENLY AVENUE, Washington, MD

Built 1823 Load: 40.8 t ADT: 6,082

MD 494

Fair

Over: CONOCOCHEAGUE CREEK

2.77 MILES EAST OF MD 57, Washington, MD

Built 1932 Load: 40.8 t ADT: 1,494

BEAVER CREEK CHURC

Fair

Over: BEAVER CREEK

0.5 MI W OF MD 66,IS 70IN, Washington, MD

Built 1930 Load: 40.8 t ADT: 168

MD 350

Fair

Over: NASSAWANGO CREEK

4.53 MILES WEST OF MD 354, Wicomico, MD

Built 1931 Load: 40.8 t ADT: 1,910

MARKET STREET

Fair

Over: WILLS CREEK

0.03 MI S OF N MECHANC ST, Allegany, MD

Built 1954 Load: 41.3 t ADT: 3,692

ADMIRAL DRIVE

Fair

Over: TRIBUTARY TO WEEMS CREEK

80 FT N OF JENNIFER ROAD, Anne Arundel, MD

Built 1980 Load: 41.3 t ADT: 8,862

GLEN FALLS ROAD

Fair

Over: TRIBUTARY TO NORTH BRANC

ON CARROLL COUNTY LINE, Baltimore, MD

Built 2008 Load: 41.3 t ADT: 214

I-895 NB ON RAMP

Fair

Over: FRANKFURST AVE

Milepost M8.0, Baltimore city, MD

Built 1957 Load: 41.3 t ADT: 2,452

MD 263

Fair

Over: HUNTING CREEK

0.04 MILE EAST OF MD 2, Calvert, MD

Built 1926 Load: 41.3 t ADT: 7,412

MD 4 SB

Fair

Over: LYONS CREEK

ON ANNE ARUNDEL CO LINE, Calvert, MD

Built 1959 Load: 41.3 t ADT: 46,661

MD 335

Fair

Over: BIRCH DAM CREEK

1.54 MILES SOUTH OF MD 16, Dorchester, MD

Built 1968 Load: 41.3 t ADT: 1,591

MD 17

Fair

Over: LITTLE CATOCTIN CREEK

0.03 MI N OF HARMONY RD, Frederick, MD

Built 1920 Load: 41.3 t ADT: 3,046

LINGANORE ROAD

Fair

Over: LINGANORE CREEK

0.87 MI N OF MD 144, Frederick, MD

Built 1976 Load: 41.3 t ADT: 2,702

UNIONVILLE ROAD

Fair

Over: TRIB. OF LINGANORE CREEK

AT WOODVILLE RD INT, Frederick, MD

Built 1929 Load: 41.3 t ADT: 1,309

SILVER KNOB ROAD

Fair

Over: YOUGHIOGHENY RIVER

0.1 M SE INT UNDERWOOD RD, Garrett, MD

Built 1984 Load: 41.3 t ADT: 324

STATE PARK RD

Fair

Over: MEADOW MT RUN

0.8 MI E INT GLENDALE RD, Garrett, MD

Built 1984 Load: 41.3 t ADT: 655

MD 22

Fair

Over: AMTRAK, TRIB TO SWAN CR

0.06 MILE EAST OF US 40, Harford, MD

Built 1968 Load: 41.3 t ADT: 22,420

Showing 2,401-2,450 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.