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 261 (BAY AVENUE

Good

Over: BRANCH OF CHESAPEAKE BAY

0.28 MI. N OF 7TH ST., Calvert, MD

Built 2021 Load: 71.6 t ADT: 1,400

CLOVERFIELD DRIVE

Good

Over: TRIBUTARY OF BYNUM RUN

0.1 MI. E. of Tyrell Ct, Harford, MD

Built 2023 Load: 71.6 t ADT: 250

RIVER ROAD

Good

Over: ROCKBURN BRANCH

AT ROCKBURN RD, Howard, MD

Built 2022 Load: 71.6 t ADT: 250

IS 68 RAMPS 1 & 2

Good

Over: BRADDOCK RUN

N OF MD 53, Allegany, MD

Built 1972 Load: 71.7 t ADT: 703

PEARRE ROAD

Good

Over: CLEMSON BRANCH

0.5 MI E OF CLEMSONVILLE, Frederick, MD

Built 1982 Load: 71.7 t ADT: 62

BLOOMFIELD ROAD

Good

Over: TUSCARORA CREEK

0.1 MI N OF OPOSSUMTWN PK, Frederick, MD

Built 1982 Load: 71.7 t ADT: 439

SANDS ROAD

Good

Over: FERRY BRANCH

0.2 MI S OF MD 422, Anne Arundel, MD

Built 1960 Load: 72.1 t ADT: 2,689

OLD MIDDLETOWN RD

Good

Over: HOLLOW CREEK

0.34 MI SOUTH OF MD 17, Frederick, MD

Built 1974 Load: 72.1 t ADT: 966

OLDE MILL RUN ROAD

Good

Over: MD200 (ICC)

0.7 mi E OF REDLAND RD, Montgomery, MD

Built 2010 Load: 72.1 t ADT: 1,073

MD 564

Good

Over: AMTRAK

0.03 MILE S OF MD 564C, Prince George's, MD

Built 1994 Load: 72.1 t ADT: 8,941

STAN FEY DRIVE

Good

Over: MOUNT NEBO BRANCH

0.21 MI N OF MD RTE 214, Prince George's, MD

Built 2001 Load: 72.1 t ADT: 204

BLACK ROCK ROAD

Good

Over: SOUTH BRANCH GUNPOWDER F

150 FT N OF TRACEYS MILL, Carroll, MD

Built 2001 Load: 72.6 t ADT: 228

SHADY LANE

Good

Over: DORSEY BRANCH

0.5 MI N OF SHARP RD, Howard, MD

Built 2011 Load: 72.6 t ADT: 1,300

EASTERDAY ROAD

Good

Over: LITTLE CATOCTIN CREEK

0.2 MI N OF WOODLAND WAY, Frederick, MD

Built 1982 Load: 73.0 t ADT: 90

MD 32 EBR

Good

Over: MIDDLE PATUXENT RIVER

0.89 MILE NORTH OF US 29, Howard, MD

Built 1995 Load: 73.0 t ADT: 61,442

ESWORTHY ROAD

Good

Over: MUDDY BRANCH

AT QUERY MILL ROAD, Montgomery, MD

Built 1999 Load: 73.0 t ADT: 3,639

MCNAIR ROAD

Good

Over: DORSEY CREEK

0.3 KM E OF DECATUR AVE, Anne Arundel, MD

Built 2011 Load: 73.1 t ADT: 4,400

BEACH DRIVE

Good

Over: SILVER CREEK

0.4 MILES EAST OF MD 185, Montgomery, MD

Built 2022 Load: 73.2 t ADT: 4,900

AIRPORT EXIT ROAD

Good

Over: AIRPORT RETURN RAMP

BWI AIRPORT, Anne Arundel, MD

Built 1992 Load: 73.5 t ADT: 20,000

MD 213

Good

Over: BIG ELK CREEK

0.1 MILE SOUTH OF MD 7D, Cecil, MD

Built 1999 Load: 73.5 t ADT: 22,306

MD 97

Good

Over: PATUXENT RIVER

ON MONTGOMERY CO LINE, Howard, MD

Built 2000 Load: 73.5 t ADT: 13,200

KINGSBROOK DRIVE

Good

Over: KING BRANCH

.1 MI S. OF CORPORATE DR, Frederick, MD

Built 1992 Load: 73.9 t ADT: 2,500

BARNES ROAD

Good

Over: WELDON CREEK

0.9 MI S OF OAK ORCHRD RD, Frederick, MD

Built 1979 Load: 73.9 t ADT: 216

MD 7

Good

Over: JAMES RUN

0.28 MILE NORTH OF MD 136, Harford, MD

Built 2014 Load: 73.9 t ADT: 12,500

PARK CIRCLE DRIVE

Good

Over: DEEP RUN

0.4 MI N MD 176 HO/AA CO., Howard, MD

Built 1990 Load: 73.9 t ADT: 870

US 40 EBR

Good

Over: LITTLE GUNPOWDER FALLS

ON HARFORD CO LINE, Baltimore, MD

Built 1935 Load: 74.2 t ADT: 14,805

US 40 WBR

Good

Over: LITTLE GUNPOWDER FALLS

ON HARFORD CO LINE, Baltimore, MD

Built 1935 Load: 74.2 t ADT: 14,805

MD 943

Good

Over: GOODWIN RUN

0.28 MILE EAST OF IS 83, Baltimore, MD

Built 1993 Load: 74.4 t ADT: 25,470

MD 943

Good

Over: GOODWIN RUN

0.28 MILE EAST OF IS 83, Baltimore, MD

Built 1993 Load: 74.4 t ADT: 25,470

SPRING AVENUE

Good

Over: TRIBUTARY TO REDHOUSE CR

0.2 MI NW OF MD 7, Baltimore, MD

Built 2005 Load: 74.4 t ADT: 115

ROCKLAND ROAD

Good

Over: LITTLE PIPE CREEK

0.01 MI N OF ROOPS MIL RD, Carroll, MD

Built 1997 Load: 74.4 t ADT: 89

LAWNDALE ROAD

Good

Over: NORTH BRANCH PATAPSCO RI

0.5 MI. W. EMORY ROAD, Carroll, MD

Built 1995 Load: 74.4 t ADT: 1,582

SERENADE LANE

Good

Over: TRIBUTARY TO PISCATAWAY

0.2 MI E OF SUMMIT CK DR, Prince George's, MD

Built 1998 Load: 74.4 t ADT: 1,192

BEN OAKS DRIVE

Good

Over: PERSIMMON CREEK

0.4 M NE OF MD 235, St. Mary's, MD

Built 2009 Load: 74.4 t ADT: 978

INDIAN SPRINGS RD

Good

Over: LANES RUN

1.3 MI N OF US RTE 40, Washington, MD

Built 1940 Load: 74.4 t ADT: 295

MD 355

Good

Over: RELOCATED RANDOLPH ROAD

2.5 MI N. OF I-495, Montgomery, MD

Built 2009 Load: 74.5 t ADT: 60,000

OPESSA STREET

Good

Over: SEVEN SPRINGS RUN

1.15 MILES E OF MD 51, Allegany, MD

Built 2009 Load: 74.8 t ADT: 682

DORSEY RUN ROAD

Good

Over: TRIB. TO PATUXENT RIVER

0.25 MI. SOUTH OF MD32, Anne Arundel, MD

Built 2008 Load: 74.8 t

MOUNT VISTA ROAD

Good

Over: TRIBUTARY TO GUNPOWDER F

1.28 MI E OF US RTE 1, Baltimore, MD

Built 1984 Load: 74.8 t ADT: 1,713

KIRKS MILL LANE

Good

Over: NORTHEAST CREEK

0.71 MI N OF MD 274, Cecil, MD

Built 2003 Load: 74.8 t ADT: 546

MD 118

Good

Over: CSX TRANSPORTATION

0.98 MILE N OF MD 117, Montgomery, MD

Built 1998 Load: 74.8 t ADT: 25,451

AVERY ROAD

Good

Over: ROCK CREEK

0.75 MI N OF JCT SR 28, Montgomery, MD

Built 1994 Load: 74.8 t ADT: 3,894

WATER STREET ROAD

Good

Over: ISRAEL CREEK

0.6 MI S OF DAYSVILLE RD, Frederick, MD

Built 2006 Load: 75.3 t ADT: 1,100

US 219

Good

Over: DEEP CREEK LAKE

3.88 MILE SOUTH OF MD 42, Garrett, MD

Built 1987 Load: 75.3 t ADT: 10,016

BRIERHILL DRIVE

Good

Over: BYNUM RUN

0.4 MILES S OF MD 22, Harford, MD

Built 1987 Load: 75.3 t ADT: 9,278

MD 201 SB

Good

Over: AMTRAK,SER RD,BEAVERDAM

0.16 MILE SOUTH OF US 50, Prince George's, MD

Built 2008 Load: 75.3 t ADT: 132,060

NORBECK RD & NORWO

Good

Over: NORTHWEST BRANCH

0.7 MILES EAST OF MD 182, Montgomery, MD

Built 2002 Load: 75.7 t ADT: 20,520

MD 202

Good

Over: COLLINGTON BRANCH

0.03 MILE NORTH OF MD 725, Prince George's, MD

Built 1992 Load: 75.7 t ADT: 17,642

RITCHIE MARLBORO R

Good

Over: CABIN BRANCH

2.91 MILES S OF IS 495, Prince George's, MD

Built 2009 Load: 75.7 t ADT: 15,750

US 220

Good

Over: MASON ROAD

0.82 MILE NORTH OF I-68, Allegany, MD

Built 1999 Load: 76.2 t ADT: 3,841

Showing 4,951-5,000 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.