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

HOLLOW ROAD

Good

Over: LITTLE CATOCTIN CREEK

AT HARMONY RD INT, Frederick, MD

Built 1981 Load: 42.6 t ADT: 126

MURRAY HILL ROAD

Good

Over: MIDDLE PATUXENT RIVER

0.1 MI S VOLLMERHAUSEN RD, Howard, MD

Built 1988 Load: 42.6 t ADT: 3,576

STEVENS FOREST ROA

Good

Over: LITTLE PATUXENT RIVER

0.1 MI E OF US 29, Howard, MD

Built 1990 Load: 42.6 t ADT: 5,350

KIRK WOODS PARK RO

Good

Over: LITTLE TONOLOWAY CREEK

0.76 MI. W OF US 40, Washington, MD

Built 2008 Load: 42.6 t ADT: 53

U.S. ROUTE 301

Good

Over: POTOMAC RIVER

ON VIRGINIA LINE, Charles, MD

Built 2022 Load: 42.8 t ADT: 18,550

ALLENDER ROAD

Good

Over: CSX RAILROAD

0.3 MI NW PULASKI HWY, Baltimore, MD

Built 1998 Load: 43.1 t ADT: 5,607

HARFORD ROAD

Good

Over: HERRING RUN

0.25 MI S ARGONNE DRIVE, Baltimore city, MD

Built 1911 Load: 43.1 t ADT: 20,994

MD 404

Good

Over: TUCKAHOE CREEK

ON QUEEN ANNES CO LINE, Caroline, MD

Built 2016 Load: 43.1 t ADT: 20,442

MD 194

Good

Over: BIG PIPE CREEK

0.64 MILE NORTH OF MD 77, Carroll, MD

Built 2005 Load: 43.1 t ADT: 5,152

GREENMOUNT CHURCH

Good

Over: MURPHY RUN

0.3 MILES EAST OF MD 30, Carroll, MD

Built 2010 Load: 43.1 t ADT: 705

SAMS CREEK ROAD

Good

Over: SAMS CREEK

0.45 MI E OF MD RTE 31, Frederick, MD

Built 1987 Load: 43.1 t ADT: 412

FOUR SEASONS DRIVE

Good

Over: TRIBUTARY TO HA HA BRANC

0.03 MILES W OF MD 7, Harford, MD

Built 2005 Load: 43.1 t ADT: 595

SOUTH ENTRANCE ROA

Good

Over: LITTLE PATUXENT RIVER

0.08 MILE WEST OF US 29, Howard, MD

Built 2004 Load: 43.1 t ADT: 4,200

CASTLEBRIDGE ROAD

Good

Over: UNNAMED STREAM

400' N OF HOMEWOOD RD, Howard, MD

Built 1995 Load: 43.1 t ADT: 50

MD 200 (ICC) WB

Good

Over: Northwest Branch

1.40 Mi West of MD650, Montgomery, MD

Built 2010 Load: 43.1 t ADT: 32,683

VAN BUREN STREET

Good

Over: CSX RAILROAD

0.1 MILES N. OF RIVERTECH, Prince George's, MD

Built 2017 Load: 43.4 t ADT: 3,000

S SPRINGFIELD ROAD

Good

Over: BURCH BRANCH

.2 MI S OF FLORAL PARK RD, Prince George's, MD

Built 2016 Load: 43.4 t ADT: 1,924

MD 43 RAMP '3'

Good

Over: TRIB TO WHITEMARSH RUN

RAMP TO MD 7, Baltimore, MD

Built 1996 Load: 43.5 t ADT: 7,440

PADONIA ROAD

Good

Over: GOODWIN RUN

0.3 MI W OF MD RTE 45, Baltimore, MD

Built 1961 Load: 43.5 t ADT: 47,071

HAMBURG STREET

Good

Over: MTA LIGHT RAIL, MARC, &

0.8 MI. N. OF I 95, Baltimore city, MD

Built 1991 Load: 43.5 t ADT: 6,332

MD 328

Good

Over: TUCKAHOE CREEK

ON TALBOT CO LINE, Caroline, MD

Built 2012 Load: 43.5 t ADT: 6,500

SAMS CREEK ROAD

Good

Over: SAMS CREEK

ON FREDERICK CO LINE, Carroll, MD

Built 1986 Load: 43.5 t ADT: 362

NEWPORT ROAD

Good

Over: GILLIS FALLS

0.09 MI N OF HOWARD CO, Carroll, MD

Built 2001 Load: 43.5 t ADT: 86

BALLENGER CREEK PI

Good

Over: STORMWATER CHANNEL RELIE

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

Built 2012 Load: 43.5 t ADT: 2,462

MD 24 NB

Good

Over: OTTERS POINT CREEK

0.1 MILE NORTH OF US 40, Harford, MD

Built 1996 Load: 43.5 t ADT: 20,242

MD 165

Good

Over: BR OF WEST BRANCH

0.97 MILE NORTH OF MD 152, Harford, MD

Built 2004 Load: 43.5 t ADT: 7,471

SUSQUEHANNA HALL R

Good

Over: DEEP RUN

0.7 MILES S OF MD 623, Harford, MD

Built 1973 Load: 43.5 t ADT: 101

BROKEN LAND PKWY

Good

Over: LITTLE PATUXENT RIVER

0.31 MI S OF US 29, Howard, MD

Built 1992 Load: 43.5 t ADT: 32,730

MD 28

Good

Over: BATCHELLORS RUN

0.65 MILE WEST OF MD 182, Montgomery, MD

Built 1999 Load: 43.5 t ADT: 24,340

MD 109

Good

Over: BR OF LITTLE MONOCACY RI

1.74 M S OFCOMUS ROAD, Montgomery, MD

Built 2003 Load: 43.5 t ADT: 1,732

FATHER HURLEY BOUL

Good

Over: CENTURY BOULEVARD

0.2 MI SW OF JCT I-270, Montgomery, MD

Built 1995 Load: 43.5 t ADT: 14,319

FATHER HURLEY BOUL

Good

Over: CENTURY BOULEVARD

0.2 MI SW OF JCT I-270, Montgomery, MD

Built 1995 Load: 43.5 t ADT: 13,713

Ramp EN

Good

Over: MD 200 (ICC),US29, Rp SE

MD200EB Ramp EN to US29NB, Montgomery, MD

Built 2011 Load: 43.5 t ADT: 5,902

MCINTOSH ROAD

Good

Over: MCINTOSH RUN

0.9 MI N OF MD RTE 245, St. Mary's, MD

Built 1984 Load: 43.5 t ADT: 2,500

OLD FORGE ROAD

Good

Over: ANTIETAM CREEK

1.2 MI W OF MD RTE 62, Washington, MD

Built 1863 Load: 43.5 t ADT: 580

MD 86

Good

Over: SOUTH BR GUNPOWDER FALLS

0.97 MI S OF PA LINE, Carroll, MD

Built 2020 Load: 43.7 t ADT: 4,337

IS 270

Good

Over: MD 85 (Buckeystown Pike)

1.0 N OF BR NO 1007400, Frederick, MD

Built 2020 Load: 43.7 t ADT: 111,550

MD 32

Good

Over: BR OF MIDDLE PATUXENT RI

1.5 MI N OF BURNTWOODS RD, Howard, MD

Built 2020 Load: 43.7 t ADT: 29,475

Livingston Rd.

Good

Over: MD 210 NORTHBOUND

1.6 MI. S. OF IS 495, Prince George's, MD

Built 2021 Load: 43.7 t ADT: 8,050

IS 81 NB

Good

Over: POTOMAC RIVER

ON WEST VIRGINIA LINE, Washington, MD

Built 1965 Load: 43.7 t ADT: 61,300

IS 81 SB

Good

Over: POTOMAC RIVER

ON WEST VIRGINIA LINE, Washington, MD

Built 1965 Load: 43.7 t ADT: 61,300

GEORGES CREEK ROAD

Good

Over: NEFF RUN

AT CHURCH STREET, Allegany, MD

Built 2007 Load: 44.0 t ADT: 1,575

BROCK BRIDGE ROAD

Good

Over: LITTLE PATUXENT RIVER

1.0 MILE SOUTH OF MD 32, Anne Arundel, MD

Built 1994 Load: 44.0 t ADT: 5,466

CEDAR AVENUE

Good

Over: TRIBUTARY TO GWYNNS FALL

1.3 MI E OF IS 695, Baltimore, MD

Built 1984 Load: 44.0 t ADT: 60

IS 95 VIADUCT SB

Good

Over: CONRAIL YARDS

Milepost M56.7, Baltimore city, MD

Built 1982 Load: 44.0 t ADT: 68,369

BEAR RUN ROAD

Good

Over: BEAR BRANCH

2.2 MI W OF MAYBERRY RD, Carroll, MD

Built 1974 Load: 44.0 t ADT: 397

MD 144FA

Good

Over: CARROLL CREEK

0.21 M E OF MARYLAND AVE, Frederick, MD

Built 1995 Load: 44.0 t ADT: 8,541

FLAG POND ROAD

Good

Over: DOUBS BRANCH

100' EAST OF BALLENGER CR, Frederick, MD

Built 1986 Load: 44.0 t ADT: 12

MD 7

Good

Over: CSX TRANS.

0.34 MILE SOUTH OF US 40, Harford, MD

Built 1993 Load: 44.0 t ADT: 12,210

MARDIC DRIVE

Good

Over: BYNUM RUN

0.05 MI N OF SPENCEOLA PK, Harford, MD

Built 1998 Load: 44.0 t ADT: 114

Showing 4,351-4,400 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.