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

BOUCHELLE RD

Unknown

Over: I-95

MILEPOST 101.1, Cecil, MD

Built 1964 ADT: 75,550

UNION CHURCH RD

Unknown

Over: I-95

MILEPOST 102.7, Cecil, MD

Built 1964 ADT: 73,550

DEAVER RD

Unknown

Over: I-95

MILEPOST 103.8, Cecil, MD

Built 1964 ADT: 73,550

IS 95

Unknown

Over: MD 545 & LITTLE ELK CR

4.4 MILES SOUTH OF MD LIN, Cecil, MD

Built 1964 ADT: 85,230

MD 213

Unknown

Over: IS 95

MILEPOST 106.2, Cecil, MD

Built 1964 ADT: 73,550

MD 316

Unknown

Over: IS 95

MP 108.3, Cecil, MD

Built 1964 ADT: 73,550

IS 95

Unknown

Over: MD 279

MP 108.9, Cecil, MD

Built 1964 ADT: 79,780

MD 5 NBR

Unknown

Over: MD 231

1.83 MILES WEST OF MD 381, Charles, MD

Built 2006 ADT: 3,322

MD 5 SBR

Unknown

Over: MD 231

1.14 MILES WEST OF MD 381, Charles, MD

Built 2006 ADT: 3,322

HOMELAND DRIVE

Unknown

Over: MD 5

1.244 M N OF ST MARY'S CO, Charles, MD

Built 2006 ADT: 37,850

US 50 EB

Unknown

Over: MD 331, D P & L RR

0.25 M S/INDIAN TOWN ROAD, Dorchester, MD

Built 1990 ADT: 2,280

US 50 WB

Unknown

Over: MD 331, D P & L RR

0.25 M S/INDIAN TOWN ROAD, Dorchester, MD

Built 1990 ADT: 2,280

US 340

Unknown

Over: MD 180 WBR

0.3 MILE WEST OF MD 478, Frederick, MD

Built 1964 ADT: 1,183

IS 270

Unknown

Over: MD 85

1.16 MILE SOUTH OF MD 355, Frederick, MD

Built 1950 ADT: 22,780

IS 270

Unknown

Over: BAKER VALLEY ROAD

2.93 MILES W OF MD 80, Frederick, MD

Built 1950

IS 270

Unknown

Over: BAKER VALLEY ROAD

2.93 MILES W OF MD 80, Frederick, MD

Built 1950

PARK MILLS ROAD

Unknown

Over: IS 270

1.44 MILES NORTH OF MD 80, Frederick, MD

Built 1950 ADT: 80,340

IS 270 NBR

Unknown

Over: MD 80

0.54 MILEWEST OF MD 355, Frederick, MD

Built 1950 ADT: 19,691

IS 270 SBR

Unknown

Over: MD 80

0.54 MILEWEST OF MD 355, Frederick, MD

Built 1950 ADT: 19,691

IS 270

Unknown

Over: DR. PERRY ROAD

1.15 MILES W OF MONT CO, Frederick, MD

Built 2010 ADT: 500

US 15 NBR

Unknown

Over: MD 26

0.43 MILE WEST OF MD 355, Frederick, MD

Built 1957 ADT: 30,292

US 15 SBR

Unknown

Over: MD 26

0.43 MILE WEST OF MD 355, Frederick, MD

Built 1968 ADT: 30,292

MOTTER AVE

Unknown

Over: US 15

0.53 MI S OF MD 26, Frederick, MD

Built 1958 ADT: 76,550

US 15 NBR

Unknown

Over: WEST SEVENTH ST

1.27 MILES N OF US 40, Frederick, MD

Built 1958 ADT: 14,161

US 15 SBR

Unknown

Over: WEST SEVENTH ST

1.27 MILES N OF US 40, Frederick, MD

Built 1968 ADT: 14,161

US 15 NBR

Unknown

Over: ROSEMONT AVE

0.77 MI N OF US 40, Frederick, MD

Built 1958 ADT: 4,090

US 15 SBR

Unknown

Over: ROSEMONT AVE

0.77 MI N OF US 40, Frederick, MD

Built 1968 ADT: 4,090

US 15 NBR

Unknown

Over: US 40/W. PATRICK STREET

AT US 15, Frederick, MD

Built 1958 ADT: 6,751

US 15 SBR

Unknown

Over: US 40/W. PATRICK STREET

AT US 15, Frederick, MD

Built 1958 ADT: 6,751

US 15B

Unknown

Over: US 15/US 40

AT US 15/US 340, Frederick, MD

Built 1955 ADT: 44,760

IS 70 EBR & RAMP L

Unknown

Over: IS 270

1.35 MILES NORTH OF MD 85, Frederick, MD

Built 1955 ADT: 109,670

NEW DESIGN ROAD

Unknown

Over: IS 70

0.51 MI W OF MD 355, Frederick, MD

Built 2002 ADT: 90,670

MD 355

Unknown

Over: IS 70

0.83 MILE EAST OF IS 270, Frederick, MD

Built 1955 ADT: 81,630

IS 70 EBR

Unknown

Over: CSX TRANS & E SOUTH ST

0.52 MI W OF MD 144FA, Frederick, MD

Built 1957 ADT: 7,841

IS 70 WBR

Unknown

Over: CSX TRANS & E SOUTH ST

0.52 MI W OF MD 144 FA, Frederick, MD

Built 1957 ADT: 7,841

MD 144FA

Unknown

Over: IS 70

0.53 M E OF BR NO 1010600, Frederick, MD

Built 1984 ADT: 68,623

US 15 NBR

Unknown

Over: MD 77, HUNTING CREEK

0.03 M E OF MOUNTAIN ROAD, Frederick, MD

Built 1957 ADT: 8,551

NEW DESIGN ROAD

Unknown

Over: IS 270

1.03 MI N OF MD 85, Frederick, MD

Built 2001 ADT: 109,670

US 340 EBR

Unknown

Over: S MOUNTAIN ROAD

0.27 MI E OF MD 180, Frederick, MD

Built 1964

US 340 WBR

Unknown

Over: S MOUNTAIN ROAD

0.27 MI E OF MD 180, Frederick, MD

Built 1964

MD 17

Unknown

Over: US 340

1.79 MILES EAST OF MD 180, Frederick, MD

Built 1964 ADT: 26,902

CATHOLIC CHURCH RD

Unknown

Over: US 340

1.57 MILES EAST OF MD 17, Frederick, MD

Built 1964 ADT: 26,902

ST MARKS ROAD

Unknown

Over: US 340

2.41 MILES EAST OF MD 17, Frederick, MD

Built 1964 ADT: 26,902

MD 180

Unknown

Over: US 340

3.38 MILES EAST OF MD 17, Frederick, MD

Built 1964 ADT: 28,982

HORINE ROAD

Unknown

Over: US 340

0.94 M W OF LANDER ROAD, Frederick, MD

Built 1965 ADT: 28,982

LANDER ROAD

Unknown

Over: US 340

0.94 M E OF HORINE ROAD, Frederick, MD

Built 1965 ADT: 32,282

US 340 EBR

Unknown

Over: US 15 SBR

4.34 MILES SOUTH OF IS 70, Frederick, MD

Built 1966 ADT: 16,060

IS 270 WBR(RAMP 1)

Unknown

Over: IS 70 EBR

0.09 MILE EAST OF IS 270, Frederick, MD

Built 1967 ADT: 90,670

IS 270 RAMPS J & F

Unknown

Over: NEW DESIGN ROAD

0.32 M S OF BR NO 1013700, Frederick, MD

Built 2002 ADT: 15,170

MT PHILLIP ROAD

Unknown

Over: IS 70

0.89 MILE EAST OF US 40AL, Frederick, MD

Built 1967 ADT: 74,920

Showing 551-600 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.