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

MD 404

Good

Over: BR OF NORWICH CREEK

1.1 MI W OF MD 309, Queen Anne's, MD

Built 1949 Load: 31.7 t ADT: 19,600

MD 145

Good

Over: GREENE BRANCH

0.3 MILE E OF COOPER ROAD, Baltimore, MD

Built 1915 Load: 32.2 t ADT: 12,432

FRANKLINTOWN ROAD

Good

Over: DEAD RUN

0.8 MI W HILTON PKWY, Baltimore city, MD

Built 2004 Load: 32.2 t ADT: 1,219

GORSUCH ROAD

Good

Over: WEST BRANCH PATAPSCO RIV

0.06 MI N OF TANNERY ROAD, Carroll, MD

Built 1968 Load: 32.2 t ADT: 7,307

MD 279

Good

Over: BR OF BIG ELK CREEK

0.15 MILE NORTH OF MD 316, Cecil, MD

Built 1959 Load: 32.2 t ADT: 12,410

COPPERMINE ROAD

Good

Over: ISRAEL CREEK

0.3 MI EAST OF MD RTE 194, Frederick, MD

Built 1966 Load: 32.2 t ADT: 2,172

HESSONG BRIDGE RD

Good

Over: HUNTING CREEK

AT LAYMAN ROAD INTERSECTN, Frederick, MD

Built 1965 Load: 32.2 t ADT: 804

THOMAS RUN ROAD

Good

Over: THOMAS RUN

0.1 MILES E OF KALMIA RD, Harford, MD

Built 2008 Load: 32.2 t ADT: 1,083

BARTOW DRIVE

Good

Over: TRIBUTARY TO CONOCOCHEAG

0.17 MI NORTH OF US RT 40, Washington, MD

Built 2000 Load: 32.2 t ADT: 2,418

MASSEY CROSSING RD

Good

Over: POCOMOKE RIVER

WOR-WIC CO LINE, Worcester, MD

Built 2007 Load: 32.2 t ADT: 110

LAUREL RUN ROAD

Good

Over: LAUREL RUN

0.35 MI W OF MD RTE 935, Allegany, MD

Built 2021 Load: 32.4 t ADT: 97

BOLLINGER ROAD

Good

Over: BEAVER RUN

1.05 MI W OF MD 140, Carroll, MD

Built 2012 Load: 32.4 t ADT: 2,328

BRYAN HALL ROAD

Good

Over: MARUMSCO CREEK

1.2 MI W OF CORNSTACK RD, Somerset, MD

Built 1978 Load: 32.4 t ADT: 140

MD 349

Good

Over: WINDSOR CREEK

4.42 MILES WEST OF MD 352, Wicomico, MD

Built 2017 Load: 32.4 t ADT: 942

MD 638

Good

Over: WESTERN MD SCENIC RR

0.02 M N OF SONGBIRD LANE, Allegany, MD

Built 1995 Load: 32.7 t ADT: 1,621

LAUREL RUN ROAD

Good

Over: LAUREL RUN

0.41 MI W OF MD RTE 935, Allegany, MD

Built 2020 Load: 32.7 t ADT: 93

LAUREL RUN ROAD

Good

Over: LAUREL RUN

0.75 MI W OF MD RTE 935, Allegany, MD

Built 2020 Load: 32.7 t ADT: 98

SUGAR MAPLE ROAD

Good

Over: UNNAMED STREAM

0.04 MI N OF MD 36, Allegany, MD

Built 1950 Load: 32.7 t ADT: 337

TOWN CREEK ROAD

Good

Over: MURLEY BRANCH

0.02 MI SW OF WARM SPR RD, Allegany, MD

Built 2020 Load: 32.7 t ADT: 301

PATUXENT ROAD

Good

Over: LITTLE PATUXENT RIVER

BOUNDRY RD S OF GATE C, Anne Arundel, MD

Built 2006 Load: 32.7 t ADT: 50

MD 32

Good

Over: DORSEY RUN

0.47 MILE NORTH OF MD 295, Anne Arundel, MD

Built 1984 Load: 32.7 t ADT: 65,902

MD 100

Good

Over: PINEY RUN

0.3 MI E OF MD 295, Anne Arundel, MD

Built 1995 Load: 32.7 t ADT: 78,282

HARMANS ROAD

Good

Over: TRIBUTARY TO STONY RUN

0.35 MI N of MD 100, Anne Arundel, MD

Built 1991 Load: 32.7 t ADT: 8,906

QUARTERFIELD ROAD

Good

Over: UNNAMED TRIBUTARY TO SEV

1.58 MI S of MD174, Anne Arundel, MD

Built 2001 Load: 32.7 t ADT: 5,153

NUTWELL ROAD

Good

Over: TRACYS CREEK

1.12 MILES E OF MD 2, Anne Arundel, MD

Built 1998 Load: 32.7 t ADT: 331

OSLER DRIVE

Good

Over: TOWSON RUN

0.04 M S OF TWSNTOWN BLVD, Baltimore, MD

Built 1964 Load: 32.7 t ADT: 16,241

ROLLING ROAD

Good

Over: SCOTTS LEVEL BRANCH

0.38 MI S OF OLD COURT RD, Baltimore, MD

Built 1982 Load: 32.7 t ADT: 9,595

GILROY ROAD

Good

Over: OREGON BRANCH

0.28 MI E OF IS 83, Baltimore, MD

Built 1966 Load: 32.7 t ADT: 5,083

OWINGS MILLS BLVD

Good

Over: BRANCH OF GWYNNS FALLS

2.5 MI. NW OF JCT. SR 140, Baltimore, MD

Built 1996 Load: 32.7 t ADT: 8,600

NEW FORGE ROAD

Good

Over: TRIBUTARY TO GUNPOWDER F

0.3 MI W OF JCT SR 7, Baltimore, MD

Built 1963 Load: 32.7 t ADT: 2,500

WEST ENTRANCE

Good

Over: TRIB OF GWYNNS FALLS

MILFORD MILL METRO, Baltimore, MD

Built 1986 Load: 32.7 t ADT: 300

US 40 EDMONDSON AV

Good

Over: GWYNNS FALLS, CSX

0.2 MI E HILTON PKWY, Baltimore city, MD

Built 1907 Load: 32.7 t ADT: 3,900

NORTHERN PARKWAY

Good

Over: POWDER MILL RUN

NORTHERN PKWY/POWDER MILL, Baltimore city, MD

Built 1965 Load: 32.7 t ADT: 31,395

PULASKI HIGHWAY

Good

Over: MOORES RUN

PULASKI HY OV MOORE'S RUN, Baltimore city, MD

Built 1971 Load: 32.7 t ADT: 52,411

LANCASTER ST. AT C

Good

Over: HARFORD RUN

LANCASTER ST AT CENTRAL A, Baltimore city, MD

Built 1985 Load: 32.7 t ADT: 5,650

MD 194

Good

Over: BRANCH OF PINEY CREEK

0.27 MILE SOUTH OF MD 140, Carroll, MD

Built 1974 Load: 32.7 t ADT: 5,732

MD 194

Good

Over: BRANCH OF PINEY CREEK

0.60 MILE SOUTH OF MD 140, Carroll, MD

Built 1974 Load: 32.7 t ADT: 5,732

OLD ELK NECK ROAD

Good

Over: MILL CREEK

0.46 MI S OF US 40, Cecil, MD

Built 1980 Load: 32.7 t ADT: 4,054

BOHEMIA CHURCH ROA

Good

Over: LITTLE BOHEMIA CREEK

3.1 MI E OF MD-213, Cecil, MD

Built 2018 Load: 32.7 t ADT: 500

PERRYVILLE COMMUNI

Good

Over: MILL CREEK

.3 MILES SE OF MD 7, Cecil, MD

Built 1989 Load: 32.7 t ADT: 124

MD 6

Good

Over: GILBERT SWAMP

2.94 MI W OF ST MARY'S CO, Charles, MD

Built 1987 Load: 32.7 t ADT: 6,492

MD 6

Good

Over: BR OF PORT TOBACCO CREEK

1.9 MILES WEST OF US 301, Charles, MD

Built 1955 Load: 32.7 t ADT: 9,552

MD 6

Good

Over: HOGHOLE RUN

2.95 MILES WEST OF US 301, Charles, MD

Built 1955 Load: 32.7 t ADT: 3,302

MD 224

Good

Over: MARBURY RUN

1.66 MILE SOUTH OF MD 425, Charles, MD

Built 1957 Load: 32.7 t ADT: 5,502

MD 5

Good

Over: TRIB TO JORDAN SWAMP

0.41 M N OF BR NO 0802300, Charles, MD

Built 1988 Load: 32.7 t ADT: 32,802

MD 425

Good

Over: JANE BERRY'S RUN

1.09 MILES NORTH OF MD 6, Charles, MD

Built 1991 Load: 32.7 t ADT: 2,400

MD 488

Good

Over: PINEY BRANCH

0.92 MILE WEST OF MD 5, Charles, MD

Built 1991 Load: 32.7 t ADT: 6,540

MD 225

Good

Over: BR OF PORT TOBACCO CREEK

0.23 M E OF BIBURY LANE, Charles, MD

Built 1949 Load: 32.7 t ADT: 12,302

MD 6

Good

Over: WHEATLEY RUN

3.49 M W OF ST MARY'S CO, Charles, MD

Built 1987 Load: 32.7 t ADT: 6,492

US 40 RAMP F(2)

Good

Over: ROCK CREEK

0.80 MI W OF FREDERICK, Frederick, MD

Built 1969 Load: 32.7 t ADT: 3,593

Showing 3,951-4,000 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.