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

5TH STREET

Fair

Over: TRIB TO PATUXENT RIVER

0.2 MI SOUTH OF MD 198 EB, Prince George's, MD

Built 1950 Load: 43.5 t ADT: 960

US 301 NB

Fair

Over: UNICORN BRANCH

0.48 M S OF KENT CO LINE, Queen Anne's, MD

Built 1955 Load: 43.5 t ADT: 10,370

CATHELL ROAD

Fair

Over: PASSERDYKE CREEK

ON WICOMICO CO LINE, Somerset, MD

Built 1996 Load: 43.5 t ADT: 12

MD 68

Fair

Over: CONOCOCHEAGUE CREEK

0.20 MILE WEST OF US 11, Washington, MD

Built 1829 Load: 43.5 t ADT: 4,532

US 13 SB

Fair

Over: WAGRAM CREEK

0.56 M N OF VA STATE LINE, Worcester, MD

Built 1945 Load: 43.5 t ADT: 12,933

MD 956

Fair

Over: CSX TRANSPORTATION

0.18 MI W OF W VA LINE, Allegany, MD

Built 1967 Load: 44.0 t ADT: 7,151

IS 195 WBR

Fair

Over: AMTRAK, PATAPSCO RIVER

0.96 MI E OF MD 295, Anne Arundel, MD

Built 1990 Load: 44.0 t ADT: 39,015

MD 125

Fair

Over: PATAPSCO RIVER

AT HOWARD COUNTY LINE, Baltimore, MD

Built 1982 Load: 44.0 t ADT: 5,551

MD 147

Fair

Over: LONG GREEN CREEK

0.02 MI N OF HARTLEY MILL, Baltimore, MD

Built 1915 Load: 44.0 t ADT: 5,752

ROLLING ROAD

Fair

Over: CSX TRANSPORTATION

.26 MI. N. OF I-95 & US 1, Baltimore, MD

Built 1931 Load: 44.0 t ADT: 39,381

IS 795 RAMP 'G'

Fair

Over: MTA METRO

@ METRO, Baltimore, MD

Built 1983 Load: 44.0 t ADT: 37,780

BRAND AVE

Fair

Over: JONES FALLS

0.03 MI N COLD SPRING LA, Baltimore city, MD

Built 1973 Load: 44.0 t ADT: 140

IS 95 RAMP D

Fair

Over: MIDDLE BR, LIGHT RAIL

0.6 MI E RUSSELL ST, Baltimore city, MD

Built 1979 Load: 44.0 t ADT: 15,504

KEYSVILLE-FREDERIC

Fair

Over: MONOCACY RIVER

ON FRED CO LINE, Carroll, MD

Built 1900 Load: 44.0 t ADT: 260

US 1

Fair

Over: STONE RUN

0.35 MILE NORTH OF MD 276, Cecil, MD

Built 1956 Load: 44.0 t ADT: 7,802

US 50 EB

Fair

Over: BIG MILL POND

3.21 MILES WEST OF MD 331, Dorchester, MD

Built 1967 Load: 44.0 t ADT: 23,981

PROVINCIAL PARKWAY

Fair

Over: FLAT RUN

AT N SETON AVE INTERSECTN, Frederick, MD

Built 1991 Load: 44.0 t ADT: 953

US 1 ALT

Fair

Over: ANACOSTIA RIVER

0.05 MILE SOUTH OF MD 450, Prince George's, MD

Built 1955 Load: 44.0 t ADT: 22,252

MD 381

Fair

Over: SWANSON CREEK

ON CHARLES CO LINE, Prince George's, MD

Built 1933 Load: 44.0 t ADT: 6,020

BROOKS DRIVE

Fair

Over: OXON RUN

0.18 MILES NORTH OF MD 4, Prince George's, MD

Built 1965 Load: 44.0 t ADT: 16,037

MD 300

Fair

Over: UNICORN BRANCH

1.4 MILES EAST OF MD 313, Queen Anne's, MD

Built 1939 Load: 44.0 t ADT: 2,461

BLANCO ROAD

Fair

Over: ANDOVER BRANCH

0.8 MI E BOLTON WOODS RD, Queen Anne's, MD

Built 1994 Load: 44.0 t ADT: 676

MD 6

Fair

Over: LOCKS SWAMP CREEK

0.1 M W OF LAUREL VIEW LN, St. Mary's, MD

Built 1930 Load: 44.0 t ADT: 1,951

MD 33

Fair

Over: OAK CREEK

0.64 MILE EAST OF MD 329, Talbot, MD

Built 1965 Load: 44.0 t ADT: 15,421

US 113 NB

Fair

Over: PILCHARD CREEK

0.68 MILE N OF MD 756, Worcester, MD

Built 1912 Load: 44.0 t ADT: 5,662

HARRISON ROAD

Fair

Over: TRAPPE CREEK

0.07 MI S OF MD 376, Worcester, MD

Built 2005 Load: 44.0 t ADT: 313

US 1

Fair

Over: AMMENDALE BRANCH

154' S of Ammendale Road, Prince George's, MD

Built 2016 Load: 44.1 t ADT: 32,400

MD 100 WBR

Fair

Over: JUMPERS HOLE ROAD

0.67 MILE EAST OF MD 2, Anne Arundel, MD

Built 1971 Load: 44.4 t ADT: 26,792

US 40

Fair

Over: CSX TRANSPORTATION

0.45 MI W OF MD 700, Baltimore, MD

Built 1990 Load: 44.4 t ADT: 47,120

IS 695 RAMP '2'

Fair

Over: WHITEMARSH BRANCH

0.02 MI N OF MD 147, Baltimore, MD

Built 1961 Load: 44.4 t ADT: 8,511

MD 702 WBR

Fair

Over: FORCE MAIN

0.03 MILE EAST OF MD 695, Baltimore, MD

Built 1972 Load: 44.4 t ADT: 19,406

MD 43

Fair

Over: BRANCH OF WHITEMARSH RUN

1.04 MILE WEST OF IS 95, Baltimore, MD

Built 1990 Load: 44.4 t ADT: 29,352

BLUE MOUNT ROAD

Fair

Over: LITTLE FALLS

1.7 MI E OF MONKTON ROAD, Baltimore, MD

Built 1995 Load: 44.4 t ADT: 854

BEACONSFIELD DRIVE

Fair

Over: BRANCH OF WHITE MARSH RU

0.1 MI E. HONEYGO BLVD., Baltimore, MD

Built 1986 Load: 44.4 t ADT: 9,681

IS 95 NB

Fair

Over: MTA LIGHT RAIL AND STORA

MTA LGTRail&Storage Yard, Baltimore city, MD

Built 1977 Load: 44.4 t ADT: 49,255

IS 95 SB

Fair

Over: MIDDLE BRANCH

0.6 MI. E. OF RUSSELL ST., Baltimore city, MD

Built 1979 Load: 44.4 t ADT: 68,141

CHANEYVILLE ROAD

Fair

Over: GRAHAM CREEK

0.35 MI N OF MD 262, Calvert, MD

Built 2009 Load: 44.4 t ADT: 433

TUCKAHOE ROAD

Fair

Over: TRIBUTARY TO TUCKAHOE CR

2.5 MILES SOUTH OF MD 404, Caroline, MD

Built 2003 Load: 44.4 t ADT: 805

MD 272

Fair

Over: CSX TRANS.

0.7 MILE NORTH OF US 40, Cecil, MD

Built 1941 Load: 44.4 t ADT: 22,632

MD 140

Fair

Over: MIDDLE CREEK

0.72 MI S OF MD 904G, Frederick, MD

Built 1932 Load: 44.4 t ADT: 4,480

GREEN ROAD

Fair

Over: TRIB OF DEER CREEK

0.02 M E OF LONG CORNER R, Harford, MD

Built 1999 Load: 44.4 t ADT: 170

US 29 NB

Fair

Over: MIDDLE PATUXENT RIVER

1.05 MILES SOUTH OF MD 32, Howard, MD

Built 1951 Load: 44.4 t ADT: 52,913

SNOWDEN RIVER PARK

Fair

Over: ROBERT FULTON DRIVE

1.0 MI S OF MD RTE 175, Howard, MD

Built 1975 Load: 44.4 t ADT: 35,944

US 29 NB

Fair

Over: PAINT BRANCH

0.87 MILE NORTH OF MD 650, Montgomery, MD

Built 1957 Load: 44.4 t ADT: 66,948

US 29 SB

Fair

Over: PAINT BRANCH

0.87 MILE NORTH OF MD 650, Montgomery, MD

Built 1957 Load: 44.4 t ADT: 66,948

MD 218

Fair

Over: OXON RUN

0.15 MI E OF WASH DC LINE, Prince George's, MD

Built 1941 Load: 44.4 t ADT: 9,011

MD 144WB

Fair

Over: TONOLOWAY CREEK

0.69 MILE WEST OF IS 70, Washington, MD

Built 1940 Load: 44.4 t ADT: 8,201

IS 70 EB

Fair

Over: CSX TRANS.

0.18 MILE EAST OF MD 65, Washington, MD

Built 1968 Load: 44.7 t ADT: 60,800

IS 68 RAMP 'A'(8)

Fair

Over: MECHANIC STREET

0.44 MI E OF US 48H, Allegany, MD

Built 1968 Load: 44.9 t ADT: 11,995

VETERNS HIGHWAY

Fair

Over: SEVERN RUN

0.76 MI N OF MD 178A, Anne Arundel, MD

Built 1933 Load: 44.9 t ADT: 8,680

Showing 2,601-2,650 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.