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 81 NBR

Unknown

Over: MAUGANSVILLE ROAD

0.38 MI N OF MD 58, Washington, MD

Built 1958 ADT: 2,140

IS 81 SBR

Unknown

Over: MAUGANSVILLE ROAD

0.38 MI N OF MD 58, Washington, MD

Built 1958 ADT: 2,140

IS 70 EB

Unknown

Over: RAMP E2 FROM MD 615

2.34 MILES E OF MD 144WB, Washington, MD

Built 1960 ADT: 23,800

IS 70 WB

Unknown

Over: RAMP E2 FROM MD 615

2.34 MILES E OF MD 144WB, Washington, MD

Built 1960 ADT: 23,800

IS 70

Unknown

Over: RAMP TO MD 615

0.88 MI E OF MD 144WB, Washington, MD

Built 1960 ADT: 23,800

IS 70 WBR & RAMP A

Unknown

Over: IS 70 EBR & RAMP 'B'

0.3 M E OF BR NO 2109200, Washington, MD

Built 1989 ADT: 37,440

MCDADE RD

Unknown

Over: US 40

1.08 MILES WEST OF IS 81, Washington, MD

Built 1960 ADT: 12,981

MD 144WA

Unknown

Over: IS 81

0.38 MILE SOUTH OF US 40, Washington, MD

Built 1963 ADT: 66,970

SANDY MILE RD

Unknown

Over: IS 68

0.02 M E OF BR NO 2107000, Washington, MD

Built 1965 ADT: 19,000

IS 70 EBR

Unknown

Over: IS 81

1.26 MILE NORTH OF US 11, Washington, MD

Built 1964 ADT: 68,040

IS 70 WBR

Unknown

Over: IS 81

1.26 MILE NORTH OF US 11, Washington, MD

Built 1964 ADT: 68,040

IS 81 NBR

Unknown

Over: MD 63/MD68

0.98 MILE EAST OF US 11, Washington, MD

Built 1965 ADT: 9,602

IS 81 SBR

Unknown

Over: MD63/MD68

0.98 MILE EAST OF US 11, Washington, MD

Built 1965 ADT: 9,602

HALFWAY BLVD

Unknown

Over: IS 81

1 MI N OF IS 70, Washington, MD

Built 1965 ADT: 66,970

US 11

Unknown

Over: IS 81

0.92 MI N OF MD 63, Washington, MD

Built 1965 ADT: 61,350

IS 70 EBR

Unknown

Over: IS 68 RAMP 'D'

0.16 MILE WEST OF IS 70, Washington, MD

Built 1965 ADT: 41,250

IS 68 WBR

Unknown

Over: IS 70 EBR,IS 68 RAMP 'D'

3.67 MILES E OF MD 144WB, Washington, MD

Built 1965 ADT: 41,250

IS 70 EBR

Unknown

Over: IS 70 RAMP 'A'

0.01 MI W OF US 522, Washington, MD

Built 1965 ADT: 23,800

US 522

Unknown

Over: IS 70 EBR RAMP 'A'

0.55 MI N OF MD 894, Washington, MD

Built 1965 ADT: 37,440

IS 70 EBR

Unknown

Over: PENNSYLVANIA AVE

0.24 MI E OF US 522, Washington, MD

Built 1965 ADT: 999

IS 70 WBR

Unknown

Over: PENNSYLVANIA AVE

0.24 MI E OF US 522, Washington, MD

Built 1965 ADT: 999

US 40 EBR

Unknown

Over: IS 70 WBR

2.72 MI W OF MD 56, Washington, MD

Built 1965 ADT: 39,350

IS 70 EBR

Unknown

Over: LICKING CREEK, CO ROAD

0.29 MI E OF US 40, Washington, MD

Built 1965 ADT: 100

IS 70 WBR

Unknown

Over: LICKING CREEK, CO ROAD

0.29 MI E OF US 40, Washington, MD

Built 1965 ADT: 100

ERNSTVILLE RD

Unknown

Over: IS 70

1.74 MI E OF US 40, Washington, MD

Built 1964 ADT: 39,350

MD 56

Unknown

Over: IS 70

1.48 MILES E OF US 40, Washington, MD

Built 1964 ADT: 39,000

BOYD ROAD

Unknown

Over: IS 70 EBR

3.04 MI N OF MD 56, Washington, MD

Built 1965 ADT: 39,000

BIG SPRING ROAD

Unknown

Over: IS 70

0.32 MI S OF CLEARSPRING, Washington, MD

Built 1965 ADT: 39,000

MD 68

Unknown

Over: IS 70

0.46 MI W OF MD 960, Washington, MD

Built 1965 ADT: 40,770

CEDAR RIDGE ROAD

Unknown

Over: IS 70 EBR

0.51 MILE SOUTH OF US 40, Washington, MD

Built 1967 ADT: 23,650

WALNUT POINT RD

Unknown

Over: IS 70

0.85 MILE WEST OF MD 63, Washington, MD

Built 1965 ADT: 40,770

IS 70 EBR

Unknown

Over: MD 63

1.59 MILES SOUTH OF US 40, Washington, MD

Built 2014 ADT: 9,591

IS 70 WBR

Unknown

Over: MD 63

1.59 MILES SOUTH OF US 40, Washington, MD

Built 2014 ADT: 9,591

IS 70 EBR

Unknown

Over: US 11

1.21 MILES NORTH OF IS 81, Washington, MD

Built 1965 ADT: 11,922

IS 70 WBR

Unknown

Over: US 11

1.21 MILES NORTH OF IS 81, Washington, MD

Built 1965 ADT: 11,922

BOWER AVENUE

Unknown

Over: IS 70

0.68 MI S OF US 11, Washington, MD

Built 1968 ADT: 62,680

IS 70 EBR

Unknown

Over: MD 632

2.68 MILES NORTH OF MD 68, Washington, MD

Built 1966 ADT: 5,601

IS 70 WBR

Unknown

Over: MD 632

2.68 MILES NORTH OF MD 68, Washington, MD

Built 1966 ADT: 5,601

IS 70 EBR

Unknown

Over: MD 65

0.3 MILE NORTH OF MD 65A, Washington, MD

Built 1968 ADT: 22,562

IS 70 WBR

Unknown

Over: MD 65

0.3 MILE NORTH OF MD 65A, Washington, MD

Built 1968 ADT: 22,562

IS 70 EBR

Unknown

Over: US 40 ALT

2.09 M W OF BR NO 2101900, Washington, MD

Built 1965 ADT: 6,082

IS 70 WBR

Unknown

Over: US 40 ALT

2.09 M W OF BR NO 2101900, Washington, MD

Built 1965 ADT: 6,082

BEAVER CREEK RD

Unknown

Over: IS 70

0.75 MI W OF US 40, Washington, MD

Built 1965 ADT: 62,740

US 40 EBR

Unknown

Over: IS 70

2.59 MILES WEST OF MD 66, Washington, MD

Built 1968 ADT: 61,140

US 40 WBR

Unknown

Over: IS 70

2.59 MILES WEST OF MD 66, Washington, MD

Built 1968 ADT: 61,140

US 522

Unknown

Over: MD 144WB,MD 894,SO. ST

0.03 MILE WEST OF MD 894, Washington, MD

Built 1937 ADT: 4,051

IS 70 EBR

Unknown

Over: MD 66

1.08 MILES NORTH OF US 40, Washington, MD

Built 1968 ADT: 8,291

IS 70 WBR

Unknown

Over: MD 66

1.08 MILES NORTH OF US 40, Washington, MD

Built 1968 ADT: 8,291

US 40

Unknown

Over: IS 70

0.12 MI W OF FREDERICK CO, Washington, MD

Built 1968 ADT: 58,600

MD 67

Unknown

Over: US 340

1.56 M E OF VIRGINIA ST/L, Washington, MD

Built 1969 ADT: 23,943

Showing 1,051-1,100 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.