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

I-95

Good

Over: CARSINS RUN

Milepost M85.6, Harford, MD

Built 1963 Load: 36.7 t ADT: 100,386

FOUNDRY STREET

Good

Over: LITTLE PATUXENT RIVER

0.03 MI N OF GORMAN RD, Howard, MD

Built 1975 Load: 36.7 t ADT: 5,511

MD 208

Good

Over: CSX TRANSPORTATION RR

0.18 MILE SOUTH OF US 1, Prince George's, MD

Built 1955 Load: 36.7 t ADT: 10,461

MD 450

Good

Over: CSX TRANSPORTATION

0.16 MILE WEST OF MD 197, Prince George's, MD

Built 2003 Load: 36.7 t ADT: 27,040

MD 200 WB

Good

Over: I-95

0.9 mi S of Van Dusen Rd, Prince George's, MD

Built 2011 Load: 36.7 t ADT: 11,521

MD 242

Good

Over: ST CLEMENTS CREEK

0.52 MILE NORTH OF MD 234, St. Mary's, MD

Built 2000 Load: 36.7 t ADT: 2,371

FROG EYE ROAD

Good

Over: ISRAEL CREEK

0.1M W OF ROHRERSVILLE RD, Washington, MD

Built 2021 Load: 36.8 t ADT: 100

MD 261

Good

Over: FISHING CREEK

0.3 MI S OF MD 260, Calvert, MD

Built 2019 Load: 36.9 t ADT: 18,067

CEDARVILLE ROAD

Good

Over: MATTAWOMAN CREEK

1.14 MI EAST OF US 301, Prince George's, MD

Built 2017 Load: 36.9 t ADT: 4,441

MD 506

Good

Over: BATTLE CREEK

1.77 MI E OF SIXES ROAD, Calvert, MD

Built 2003 Load: 37.2 t ADT: 1,997

MD 30

Good

Over: INDIAN RUN

0.645 M S OF MD 482, Carroll, MD

Built 2007 Load: 37.2 t ADT: 9,200

COOL SPRINGS ROAD

Good

Over: TRIB TO NORTHEAST RIVER

0.5 MI N OF MD 7, Cecil, MD

Built 2007 Load: 37.2 t ADT: 561

MD 335

Good

Over: WALLACE CREEK

0.47 MILE SOUTH OF MD 336, Dorchester, MD

Built 2008 Load: 37.2 t ADT: 871

BILL MOXLEY ROAD

Good

Over: BRANCH OF BUSH CREEK

500' SOUTH OF WESTWIND DR, Frederick, MD

Built 1973 Load: 37.2 t ADT: 1,212

MD 495

Good

Over: N FORK CRABTREE CREEK

3.28 MILES N OF MD 135, Garrett, MD

Built 1987 Load: 37.2 t ADT: 1,652

ALDINO-STEPNEY RD

Good

Over: CARSINS RUN

0.5 MILES N OF MD 22, Harford, MD

Built 2000 Load: 37.2 t ADT: 439

MD 198 EB

Good

Over: LAFAYETTE AVE, CSX TRANS

0.26 MILE WEST OF MD 197, Prince George's, MD

Built 1984 Load: 37.2 t ADT: 21,349

MD 198 WB

Good

Over: LAFAYETTE AVE, CSX TRANS

0.26 MILE WEST OF MD 197, Prince George's, MD

Built 1944 Load: 37.2 t ADT: 20,511

IS 68

Good

Over: LITTLE TONOLOWAY CREEK

1.46 MILES E OF MD 144WB, Washington, MD

Built 1965 Load: 37.2 t ADT: 19,000

CAMPBELL BOULEVARD

Good

Over: TRIBUTARY TO WHITE MARSH

0.5 Miles East of US 40, Baltimore, MD

Built 2015 Load: 37.3 t ADT: 4,393

MD 304

Good

Over: US 301

2.5 MI E OF MD 213, Queen Anne's, MD

Built 2017 Load: 37.3 t ADT: 4,525

MD 35

Good

Over: BRANCH OF WILLS CREEK

0.17 MI S OF PA LINE, Allegany, MD

Built 2008 Load: 37.6 t ADT: 5,001

MD 43

Good

Over: WHITE MARSH RUN

0.197 MILE EAST OF US 40, Baltimore, MD

Built 2004 Load: 37.6 t ADT: 13,012

PAINTERS MILL ROAD

Good

Over: GWYNN FALLS

0.5 MI SW REISTERSTOWN RD, Baltimore, MD

Built 1954 Load: 37.6 t ADT: 22,643

ARTERS MILL ROAD

Good

Over: SILVER RUN

0.47 MI N OF MAYBERRY RD, Carroll, MD

Built 1986 Load: 37.6 t ADT: 245

CARROLLTON ROAD

Good

Over: WEST BRANCH PATAPSCO RIV

0.09 MI W OF DUTROW ROAD, Carroll, MD

Built 1978 Load: 37.6 t ADT: 1,697

GAPLAND ROAD

Good

Over: BROAD RUN

0.85 MI WEST OF MD 383, Frederick, MD

Built 2007 Load: 37.6 t ADT: 960

CHRISTOPHERS CROSS

Good

Over: TRIBUTARY OF TUSCARORA C

WEST OF THOMAS JOHNSON DR, Frederick, MD

Built 2004 Load: 37.6 t ADT: 4,896

WESTERNPORT ROAD

Good

Over: SAVAGE RIVER

0.02 MI W SAVAGE RIVER RD, Garrett, MD

Built 2003 Load: 37.6 t ADT: 138

MD 32

Good

Over: RIV RD,CSX,PATAPSCO RIV

ON CARROLL COUNTY LINE, Howard, MD

Built 2003 Load: 37.6 t ADT: 19,240

STEPHENS ROAD

Good

Over: HAMMOND BRANCH

0.3 M N WHISKEY BOTTOM RD, Howard, MD

Built 2021 Load: 37.6 t ADT: 3,350

SUMMIT AVENUE

Good

Over: CSXT RAILROAD

0.14 MILE NORTH OF MD 547, Montgomery, MD

Built 1996 Load: 37.6 t ADT: 9,746

WASHINGTONIAN BLVD

Good

Over: SAM EIG HIGHWAY

0.5 MI WEST OF I-270, Montgomery, MD

Built 1998 Load: 37.6 t ADT: 9,998

MD 200 (ICC) EB

Good

Over: NORTH BRANCH ROCK CREEK

1.51 MI W OF MD 97, Montgomery, MD

Built 2010 Load: 37.6 t ADT: 31,652

MOLLY BERRY ROAD

Good

Over: ROCK CREEK

0.27 M N OF BDN NAYLOR RD, Prince George's, MD

Built 2005 Load: 37.6 t ADT: 927

MECHANICS VALLEY R

Good

Over: LITTLE NORTHEAST CREEK

0.41 MI N OF US 40, Cecil, MD

Built 2016 Load: 37.9 t ADT: 5,436

MD 2

Good

Over: SAWMILL CREEK

0.09 MI N OF MD 270, Anne Arundel, MD

Built 1937 Load: 38.1 t ADT: 31,511

MD 10 SBR

Good

Over: JUMPERS HOLE ROAD

0.05 MI S OF MD 100, Anne Arundel, MD

Built 1988 Load: 38.1 t ADT: 33,320

MD 150

Good

Over: MIDDLE RIVER

0.27 MI SW OF MD 700, Baltimore, MD

Built 1993 Load: 38.1 t ADT: 38,470

US 40

Good

Over: PATAPSCO RIVER

ON HOWARD CO LINE, Baltimore, MD

Built 1936 Load: 38.1 t ADT: 37,530

TRENTON ROAD

Good

Over: LITTLE PINEY RUN

0.4 MI. W DARK HOLLOW RD, Baltimore, MD

Built 2007 Load: 38.1 t ADT: 722

MD 281

Good

Over: BIG ELK CREEK

0.39 MILE EAST OF MD 7D, Cecil, MD

Built 1960 Load: 38.1 t ADT: 6,681

MD 17

Good

Over: MIDDLE CREEK

1.55 M N OF CROW ROCK RD, Frederick, MD

Built 2005 Load: 38.1 t ADT: 1,951

NEW DESIGN ROAD

Good

Over: BALLENGER CREEK

1.42 MI. SOUTH OF I-70, Frederick, MD

Built 1998 Load: 38.1 t ADT: 19,907

NEW LONDON ROAD

Good

Over: BENS BRANCH

0.2 MILES SW OF MD 75, Frederick, MD

Built 2005 Load: 38.1 t ADT: 1,882

SWALLOW FALLS RD

Good

Over: YOUGHIOGHENY RIVER

0.1 M E INT MAPLE GLADE, Garrett, MD

Built 2011 Load: 38.1 t ADT: 488

MD 152

Good

Over: CSX TRANSPORTATION

0.25 MILE NORTH OF US 40, Harford, MD

Built 1971 Load: 38.1 t ADT: 24,672

TWINSTREAM DRIVE

Good

Over: TRIB TO BONNIE BR

75' W of Bonnie Branch Rd, Howard, MD

Built 2000 Load: 38.1 t ADT: 25

MD 200 (ICC) EB

Good

Over: US 29 & Ramp SE, NB&EB

0.7 mi W of Briggs Chaney, Montgomery, MD

Built 2011 Load: 38.1 t ADT: 21,522

23RD PARKWAY

Good

Over: OXON RUN

0.10 MI SE OF WASH DC LN, Prince George's, MD

Built 2002 Load: 38.1 t ADT: 8,980

Showing 4,151-4,200 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.