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

PROENTY ROAD

Fair

Over: JENNINGS RUN

0.02 MI S OF MD 36, Allegany, MD

Built 1926 Load: 34.9 t ADT: 1,125

SMOUSES MILL ROAD

Fair

Over: EVITTS CREEK

0.67 MI S OF US 220, Allegany, MD

Built 2002 Load: 34.9 t ADT: 238

US 50

Fair

Over: SEVERN RIVER

0.85 M W OF BR NO 0203900, Anne Arundel, MD

Built 1953 Load: 34.9 t ADT: 124,193

SPA ROAD

Fair

Over: SPA CREEK

0.5 MI N OF FOREST DRIVE, Anne Arundel, MD

Built 1970 Load: 34.9 t ADT: 5,131

SECOND LEVEL ENTRA

Fair

Over: SOUTH END OF CONSOLIDATE

CRCF - BWI AIRPORT, Anne Arundel, MD

Built 2003 Load: 34.9 t ADT: 113

I-83 RAMP B

Fair

Over: PARKING LOTS

0.2 MI N OF MADISON ST, Baltimore city, MD

Built 1976 Load: 34.9 t ADT: 8,794

PENNINGTON AVENUE

Fair

Over: CABIN BRANCH

1.5 MI S PATAPSCO AVE, Baltimore city, MD

Built 1986 Load: 34.9 t ADT: 13,500

US 40 EB

Fair

Over: AMTRAK

0.31 MILE EAST OF MD 279, Cecil, MD

Built 1992 Load: 34.9 t ADT: 17,906

MD 135

Fair

Over: LITTLE YOUGHIOGHENY RIVE

0.28 MILE EAST OF MD 560, Garrett, MD

Built 1932 Load: 34.9 t ADT: 6,712

SAVAGE RIVER ROAD

Fair

Over: SAVAGE RIVER

0.78 MI S WESTERNPORT RD, Garrett, MD

Built 2001 Load: 34.9 t ADT: 610

OAKLAND-ROSEDALE R

Fair

Over: LITTLE YOUGHIOGHENY RIVE

0.14 MI NORTH OF MD 39, Garrett, MD

Built 2004 Load: 34.9 t ADT: 1,070

ORENDORF ROAD

Fair

Over: NORTH BRANCH CASSELMAN R

SOUTH OF US 40, Garrett, MD

Built 1988 Load: 34.9 t ADT: 100

TAYLOR ROAD

Fair

Over: BROAD CREEK

0.7 MILES E OF MD 543, Harford, MD

Built 1974 Load: 34.9 t ADT: 44

CARROLL MILL ROAD

Fair

Over: MIDDLE PATUXENT RIVER

0.4 MI W OF FOLLY QUARTER, Howard, MD

Built 1975 Load: 34.9 t ADT: 1,346

I-895 SB

Fair

Over: B&O RR,COUNTY ROADS

Milepost 0.7, Howard, MD

Built 1972 Load: 34.9 t ADT: 6,015

US 301 NB

Fair

Over: SASSAFRAS RIVER

ON CECIL COUNTY LINE, Kent, MD

Built 1955 Load: 34.9 t ADT: 9,710

MD 182

Fair

Over: BATCHELLOR'S RUN

0.391 MILE SOUTH OF MD 28, Montgomery, MD

Built 1931 Load: 34.9 t ADT: 9,850

IS 495

Fair

Over: NORTHWEST BRANCH

1.00 MILE WEST OF MD 650, Montgomery, MD

Built 1967 Load: 34.9 t ADT: 222,147

WATKINS MILL ROAD

Fair

Over: CABIN BRANCH

.4 MI S OF APPLE RIDGE RD, Montgomery, MD

Built 1990 Load: 34.9 t ADT: 12,768

FOREST GLEN ROAD

Fair

Over: SLIGO CREEK

0.6 MI EAST OF MD 97, Montgomery, MD

Built 1974 Load: 34.9 t ADT: 12,150

FRENCHTOWN ROAD

Fair

Over: MINE CREEK

1.0 MI SE OF RUMBLEY, Somerset, MD

Built 1984 Load: 34.9 t ADT: 64

MD 67

Fair

Over: ABANDONED RR, ISRAEL CRE

0.08 MILE SOUTH OF MD 67D, Washington, MD

Built 1969 Load: 34.9 t ADT: 5,202

CAMPBELLTOWN ROAD

Fair

Over: BIRCH BRANCH

1.55 MI S OF MD 610, Worcester, MD

Built 1994 Load: 34.9 t ADT: 275

US 40 ALT

Fair

Over: BRADDOCK RUN

0.08 MILE EAST OF MD 53, Allegany, MD

Built 1947 Load: 35.4 t ADT: 12,812

MD 2

Fair

Over: SOUTH RIVER

0.86MI N OF MD 253, Anne Arundel, MD

Built 1983 Load: 35.4 t ADT: 53,221

MD 665 WB

Fair

Over: CHURCH CREEK

0.29 MILE EAST OF MD 2, Anne Arundel, MD

Built 1991 Load: 35.4 t ADT: 28,680

MD 7

Fair

Over: GUNPOWDER FALLS

1.74 MI S OF HARFORD CO, Baltimore, MD

Built 1987 Load: 35.4 t ADT: 8,863

MD 41

Fair

Over: TRIB TO HERRING RUN

0.95 MI N OF BALT CITY, Baltimore, MD

Built 1963 Load: 35.4 t ADT: 29,990

MD 146

Fair

Over: LOCH RAVEN RESERVOIR

0.48 M N OF OLD BOSLEY RD, Baltimore, MD

Built 1976 Load: 35.4 t ADT: 20,421

CUB HILL ROAD

Fair

Over: TRIBUTARY TO GUNPOWDER F

0.2 MI E OF CROMWELL BR R, Baltimore, MD

Built 1920 Load: 35.4 t ADT: 7,580

BEETREE ROAD

Fair

Over: BEETREE RUN

1.4 MI W OF MD RTE 45, Baltimore, MD

Built 1979 Load: 35.4 t ADT: 87

RUTHERFORD ROAD

Fair

Over: DEAD RUN

0.38 MI S OF WINDSOR BLVD, Baltimore, MD

Built 1968 Load: 35.4 t ADT: 3,998

I-83 NB OFF-RAMP T

Fair

Over: MTA LIGHT RAIL

0.9 MI N OF NORTH AVE, Baltimore city, MD

Built 1957 Load: 35.4 t ADT: 25,265

LOMBARD STREET VIA

Fair

Over: NORFOLK SOUTHERN RAILROA

0.2 MI W OF I-895, Baltimore city, MD

Built 1991 Load: 35.4 t ADT: 30,700

EB MORAVIA RD TO I

Fair

Over: US40 (Pulaski Highway)

0.4 MI. E. OF IS 895, Baltimore city, MD

Built 1976 Load: 35.4 t ADT: 6,464

MD 4 NB

Fair

Over: HALL CREEK

.442 M N OF MT HARMONY RD, Calvert, MD

Built 1966 Load: 35.4 t ADT: 35,171

MD 4 SB

Fair

Over: HALL CREEK

.442 M N OF MT HARMONY RD, Calvert, MD

Built 1929 Load: 35.4 t ADT: 35,171

MD 306

Fair

Over: TANYARD BRANCH

2000 FEET EAST OF MD 315, Caroline, MD

Built 1950 Load: 35.4 t ADT: 2,391

MD 77

Fair

Over: BIG PIPE CREEK

1.52 MILE WEST OF MD 194, Carroll, MD

Built 1977 Load: 35.4 t ADT: 841

MD 229

Fair

Over: OLD WOMANS RUN

0.6 MILE EAST OF MD 227, Charles, MD

Built 1939 Load: 35.4 t ADT: 3,581

MD 144FA

Fair

Over: MONOCACY RIVER

1.04 MILE EAST OF IS 70, Frederick, MD

Built 1955 Load: 35.4 t ADT: 13,861

MD 77

Fair

Over: BR OF HUNTING CREEK

2.72 MI E OF WASH CO, Frederick, MD

Built 1971 Load: 35.4 t ADT: 3,271

ANNANDALE ROAD

Fair

Over: TOMS CREEK

0.62 MI W OF EMMITSBURG, Frederick, MD

Built 1980 Load: 35.4 t ADT: 1,505

ARNOLDTOWN ROAD

Fair

Over: BROAD RUN

0.2 MI N PICNIC WOODS RD, Frederick, MD

Built 1982 Load: 35.4 t ADT: 339

WWTP ROAD

Fair

Over: CARROLL CREEK

1.8 MI EAST OF MD 355, Frederick, MD

Built 1936 Load: 35.4 t ADT: 3,813

W. COLLEGE TERRACE

Fair

Over: CARROLL CREEK

0.2 MI NORTH OF MD 144, Frederick, MD

Built 1933 Load: 35.4 t ADT: 4,060

CARSINS RUN ROAD

Fair

Over: CARSINS RUN

0.03 MILES N OF MD 22, Harford, MD

Built 1972 Load: 35.4 t ADT: 655

MD 410

Fair

Over: BRANCH OF ROCK CREEK

0.34 MILE WEST OF MD 390, Montgomery, MD

Built 1929 Load: 35.4 t ADT: 26,931

MD 547

Fair

Over: ROCK CREEK

0.66 MILE WEST OF MD 185, Montgomery, MD

Built 1932 Load: 35.4 t ADT: 10,982

MD 213

Fair

Over: GRANNY FINLEY BRANCH

2.9 MILES SOUTH OF MD 19A, Queen Anne's, MD

Built 1910 Load: 35.4 t ADT: 6,761

Showing 2,051-2,100 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.