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%.

Condition Distribution

Bridge inventory deck-condition mix — Maryland (FHWA NBI)

Maryland25.909173149990956%49.140582594535914%GoodFairPoorStructurally Deficient
Bridge inventory deck-condition mix — Maryland (FHWA NBI)

Counties (24)

Allegany 245 Anne Arundel 395 Baltimore 787 Baltimore city 380 Calvert 33 Caroline 70 Carroll 205 Cecil 194 Charles 94 Dorchester 47 Frederick 491 Garrett 139 Harford 275 Howard 310 Kent 44 Montgomery 522 Prince George's 582 Queen Anne's 88 Somerset 46 St. Mary's 50 Talbot 42 Washington 301 Wicomico 100 Worcester 82

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.

OLD SELBYSPORT RD

Poor

Over: BEAR CREEK

0.01 MI N OF WALNUT ST, Garrett, MD

Built 1920 Load: 2.7 t ADT: 30

ZION ROAD

Poor

Over: HAWLINGS RIVER

2.8 MILES NORTH OF MD 108, Montgomery, MD

Built 1930 Load: 4.5 t ADT: 2,440

ROXBURY ROAD

Poor

Over: BEAVER CREEK

0.1 MI W OF ALT US RTE 40, Washington, MD

Built 1920 Load: 7.3 t ADT: 533

TUFTON AVENUE

Poor

Over: WATERSPOUT RUN

2.63 MI. WEST MD 25, Baltimore, MD

Built 1920 Load: 7.7 t ADT: 7,735

MOHRS LANE

Structurally Deficient

Over: CSX RAILROAD

0.1 MI NW OF US RTE 40, Baltimore, MD

Built 1912 Load: 9.1 t ADT: 1,600

OLD MONTGOMERY RD

Structurally Deficient

Over: LITTLE PATUXENT RIVER

0.5 MI W OF US RTE 29, Howard, MD

Built 1935 Load: 10.0 t ADT: 10

All Bridges in Maryland

IS 495 NW RAMP

Unknown

Over: MACARTHUR BOULEVARD

0.58 MI E OF VA LINE, Montgomery, MD

Built 1963 ADT: 12,002

IS 270 SBR

Unknown

Over: IS 495 OL

0.15 MILE WEST OF IS 270, Montgomery, MD

Built 1990 ADT: 115,750

SHADY GROVE ROAD

Unknown

Over: IS 370

0.48 m e of br no 1515000, Montgomery, MD

Built 1989 ADT: 78,741

IS 370 EBR

Unknown

Over: IS 370 RAMP 'J'

0.22 MILE EAST OF MD 355, Montgomery, MD

Built 1988 ADT: 6,228

IS 370

Unknown

Over: MD 355

.06 M N OF SHADY GROVE RD, Montgomery, MD

Built 1989 ADT: 34,970

INDUSTRIAL DRIVE

Unknown

Over: IS 370

0.5 MI E OF IS 270, Montgomery, MD

Built 1990 ADT: 78,741

IS 370 RAMP'F'

Unknown

Over: IS 370

0.16 MILE EAST OF IS 270, Montgomery, MD

Built 1990 ADT: 78,741

IS 270

Unknown

Over: IS 370

1.2 MILES WEST OF MD 355, Montgomery, MD

Built 1990 ADT: 78,741

IS 270 RAMP 'C'(5)

Unknown

Over: IS 370 RAMP 'B'

1.24 MILES WEST OD MD 355, Montgomery, MD

Built 1990 ADT: 18,057

IS 270 RAMP 'C'(5)

Unknown

Over: IS 270 RAMP 'F'(1)

0.21 MILE SOUTH OF IS 370, Montgomery, MD

Built 1990 ADT: 13,596

IS 370 RAMP 'F'(1)

Unknown

Over: IS 270

0.08 MILE NORTH OF IS 370, Montgomery, MD

Built 1990 ADT: 216,270

IS 370 EBR

Unknown

Over: IS 370 RAMP 'B'

0.07 MILE WEST OF IS 270, Montgomery, MD

Built 1990 ADT: 18,057

IS 270 RAMP 'A'(6)

Unknown

Over: IS 495 OL

0.78 MILE EAST OF MD 187, Montgomery, MD

Built 1990 ADT: 115,750

ROCKLEDGE BL'VD

Unknown

Over: IS 270

0.29 MILE NORTH OF MD 187, Montgomery, MD

Built 2002 ADT: 130,450

MD 927 & RAMP 'D'

Unknown

Over: IS 270 RAMP 'I'

0.13 MILE EAST OF IS 270, Montgomery, MD

Built 1988 ADT: 1,487

IS 270 RAMP A 1

Unknown

Over: IS 270Y

0.87 M N/DEMOCRACY BL'VD, Montgomery, MD

Built 1995 ADT: 132,561

DEER RIDGE ROAD

Unknown

Over: MD 119

0.27 M S OF BR NO 1517400, Montgomery, MD

Built 1989 ADT: 20,731

MA 929A & MD 929B

Unknown

Over: US 29

0.47 M N OF TECH ROAD, Montgomery, MD

Built 2006 ADT: 54,750

MD 929A

Unknown

Over: US FUTURE RAMP E

0.033 MILE WEST OF US 29, Montgomery, MD

Built 2006 ADT: 3,385

US 29 NBR

Unknown

Over: MD 198

1.29 M W OF PG CO LINE, Montgomery, MD

Built 2002 ADT: 41,221

US 29 SBR

Unknown

Over: MD 198

1.29 M W OF PG CO LINE, Montgomery, MD

Built 2002 ADT: 41,221

DUSTIN ROAD

Unknown

Over: US 29

.78 M S OF HOWARD CO LINE, Montgomery, MD

Built 2003 ADT: 49,203

BRIGGS CHANEY ROAD

Unknown

Over: US 29

2.26 MILES S OF MD 198, Montgomery, MD

Built 2007 ADT: 51,532

WESTLAKE TERRACE-F

Unknown

Over: I-270

1 MI N OF DEMOCRACY BLVD, Montgomery, MD

Built 1994 ADT: 133,092

FATHER HURLEY BOUL

Unknown

Over: I-270

0.5MI E. OF CRYSTAL RK DR, Montgomery, MD

Built 1995 ADT: 97,601

FATHER HURLEY BOUL

Unknown

Over: I-270

0.5MI E. OF CRYSTAL RK DR, Montgomery, MD

Built 1995 ADT: 97,601

BETHESDA TROLLEY T

Unknown

Over: I-495

4.96 MI WEST OF I-270, Montgomery, MD

Built 2003 ADT: 112,619

BETHESDA TROLLEY T

Unknown

Over: EAST SPUR OF I-270

.695 MI NORTH OF I-495, Montgomery, MD

Built 2003 ADT: 112,111

GUDE DRIVE WEST

Unknown

Over: I-270

.35 MI EAST OF MD 28, Montgomery, MD

Built 1985 ADT: 240,421

WOOTTON PARKWAY

Unknown

Over: I-270

0.2 MI. E. SEVEN LOCKS RD, Montgomery, MD

Built 1990 ADT: 263,331

US 1

Unknown

Over: MD 193

0.53 MILE WEST OF MD 430, Prince George's, MD

Built 1988 ADT: 45,930

MD 450

Unknown

Over: MD 564 EBR

0.01 M W OF CIPRIANO ROAD, Prince George's, MD

Built 1989 ADT: 18,290

MD 201

Unknown

Over: MD 450

0.38 MILE EAST OF US 1 AL, Prince George's, MD

Built 1955 ADT: 31,690

MD 201 NBR

Unknown

Over: US 50

0.5 M E OF WASH DC LINE, Prince George's, MD

Built 1957 ADT: 84,172

MD 201 SBR

Unknown

Over: US 50

0.5 M E OF WASH DC LINE, Prince George's, MD

Built 1957 ADT: 84,172

MD 202

Unknown

Over: MD 704

1.35 MILES WEST OF IS 95, Prince George's, MD

Built 1969 ADT: 27,730

CHERRY HILL RD

Unknown

Over: IS 95

1.45 MILE SOUTH OF MD 212, Prince George's, MD

Built 1971 ADT: 187,850

US 301 SB

Unknown

Over: MD 5

0.38 MILE SOUTH OF MD 373, Prince George's, MD

Built 1950 ADT: 59,192

MD 197

Unknown

Over: IS 595

1.4 MILES WEST OF US 301, Prince George's, MD

Built 1955 ADT: 97,580

MD 950D

Unknown

Over: IS 595

1.55 MILES EAST OF MD 193, Prince George's, MD

Built 1955 ADT: 113,590

IS 595 EBR

Unknown

Over: MD 193

1.18 MILES EAST OF MD 450, Prince George's, MD

Built 1955 ADT: 18,990

IS 595 WBR

Unknown

Over: MD 193

1.18 MILES EAST OF MD 450, Prince George's, MD

Built 1955 ADT: 18,990

MD 950C

Unknown

Over: IS 595

1.03 MILES EAST OD MD 704, Prince George's, MD

Built 1991 ADT: 113,590

IS 595

Unknown

Over: MD 704

0.79 MILE EAST OF IS 95, Prince George's, MD

Built 1955 ADT: 44,620

MD 726

Unknown

Over: MD 4

0.20 MI S OF MD 4PA, Prince George's, MD

Built 1959 ADT: 45,955

MD 4 EBR

Unknown

Over: US 301

0.71 MILE SOUTH OF MD 725, Prince George's, MD

Built 1959 ADT: 46,652

MD 4 WBR

Unknown

Over: US 301

0.71 MILE SOUTH OF MD 725, Prince George's, MD

Built 1959 ADT: 46,652

MD 4 EBR

Unknown

Over: MD 717

0.13 M S OF BR NO 1610900, Prince George's, MD

Built 1959 ADT: 11,061

MD 4 WBR

Unknown

Over: MD 717

0.13 M S OF BR NO 1610900, Prince George's, MD

Built 1959 ADT: 11,061

OLD CRAIN HWY

Unknown

Over: MD 4

OLD CRAIN HWY @ MD 4, Prince George's, MD

Built 1988 ADT: 49,572

Showing 851-900 of 5,527 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
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.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.