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 45

Good

Over: BRANCH OF BEAVERDAM RUN

0.71 MI N OF CHURCH LANE, Baltimore, MD

Built 1989 Load: 55.3 t ADT: 27,510

MD 425

Good

Over: BR OF HILL TOP FORK

1.99 MILES SOUTH OF MD 6, Charles, MD

Built 1995 Load: 55.3 t ADT: 2,400

MD 26

Good

Over: MONOCACY RIVER

0.2 MILE WEST OF MD 194, Frederick, MD

Built 1997 Load: 55.3 t ADT: 16,275

LEGEER ROAD

Good

Over: N. BRANCH OF CASSELMAN R

0.67 MI NW OF MD RTE 495, Garrett, MD

Built 2006 Load: 55.3 t ADT: 93

RYAN ROAD

Good

Over: BREAD AND CHEESE BRANCH

1.1 MILES NORTH OF MD 152, Harford, MD

Built 2008 Load: 55.3 t ADT: 1,530

DORSEY RUN ROAD

Good

Over: DEEP RUN

0.5 MI SE OF US 1, Howard, MD

Built 1995 Load: 55.3 t ADT: 50

MD 5

Good

Over: COVENTRY ROAD

1.66 MILES S OF MD 337, Prince George's, MD

Built 1999 Load: 55.3 t ADT: 107,592

US 50

Good

Over: NORTHWOOD DRIVE

0.516 MILE WEST OF US 13, Wicomico, MD

Built 2001 Load: 55.3 t ADT: 18,971

MD 39

Good

Over: YOUGHIOGHENY RIVER

0.36 MILE EAST OF MD 39A, Garrett, MD

Built 2021 Load: 55.4 t ADT: 3,875

UPPER LEVEL ROADWA

Good

Over: ELM ROAD

BWI AIRPORT RAMP A, Anne Arundel, MD

Built 1995 Load: 55.8 t ADT: 14,700

GREENE ROAD

Good

Over: TRIBUTARY TO LITTLE GUNP

0.37 MI NE OF MD RTE 145, Baltimore, MD

Built 1920 Load: 55.8 t ADT: 603

PICNIC WOODS ROAD

Good

Over: MIDDLE CREEK

0.6 MI S OF BIDLE ROAD, Frederick, MD

Built 1974 Load: 55.8 t ADT: 278

MD 175 EBR

Good

Over: SNOWDEN RIVER PARKWAY

0.84 MILE WEST OF MD 108, Howard, MD

Built 2001 Load: 55.8 t ADT: 30,855

MARRIOTTSVILLE ROA

Good

Over: LITTLE PATUXENT RIVER

0.23 MILE NORTH OF IS 70, Howard, MD

Built 1967 Load: 55.8 t ADT: 2,616

MD 28

Good

Over: SENECA CREEK

0.2 MILE EAST OF MD 107, Montgomery, MD

Built 2000 Load: 55.8 t ADT: 11,520

US 13 NB

Good

Over: POCOMOKE RIVER

ON SOMERSET CO LINE, Worcester, MD

Built 1959 Load: 55.8 t ADT: 15,500

ODENTON TOWN CENTE

Good

Over: PICTURE SPRING BRANCH

0.3 MI SOUTH OF MD 32, Anne Arundel, MD

Built 2018 Load: 56.1 t ADT: 5,212

SOUTH DOLFIELD ROA

Good

Over: GWYNNS FALLS

0.3 M NW PAINTERS MILL RD, Baltimore, MD

Built 1965 Load: 56.2 t ADT: 8,948

I-95 NB

Good

Over: CAMPBELL ROAD

0.66 MI S OF MD RTE 43, Baltimore, MD

Built 1962 Load: 56.2 t ADT: 98,960

CHARLES STREET

Good

Over: AMTRAK

0.2 MI N OF MT ROYAL AVE, Baltimore city, MD

Built 2003 Load: 56.2 t ADT: 20,304

LEGION ROAD

Good

Over: WATTS CREEK

0.5 MI SE OF DENTON, Caroline, MD

Built 2011 Load: 56.2 t ADT: 1,099

MD 84

Good

Over: MEADOW BRANCH

1.24 MILE SOUTH OF MD 832, Carroll, MD

Built 2003 Load: 56.2 t ADT: 922

HOOVER MILL ROAD

Good

Over: BIG PIPE CREEK

0.15 MI SW OF EBBVALE RD, Carroll, MD

Built 1984 Load: 56.2 t ADT: 35

MD 140

Good

Over: CATTAIL BRANCH

0.74 MI N OF CARROLL CO, Frederick, MD

Built 1987 Load: 56.2 t ADT: 4,001

MD 136

Good

Over: JAMES RUN

1.6 MILES NORTH OF MD 543, Harford, MD

Built 2006 Load: 56.2 t ADT: 6,361

CLARKSBURG ROAD

Good

Over: LITTLE BENNETT CREEK

1.9 MI N OF MD 355, Montgomery, MD

Built 1998 Load: 56.2 t ADT: 2,934

MD 200 (ICC) EB

Good

Over: Ramp NW

0.6 mi W of Briggs Chaney, Montgomery, MD

Built 2011 Load: 56.2 t ADT: 22,682

MD 19

Good

Over: BEAVERDAM DITCH

0.43 MILE WEST OF MD 313, Queen Anne's, MD

Built 2006 Load: 56.2 t ADT: 1,532

MARKET STREET

Good

Over: WMSRR

0.09 M S OF N MECHANIC ST, Allegany, MD

Built 1928 Load: 56.7 t ADT: 3,445

MD 665

Good

Over: RIVA ROAD

0.63 MILE WEST OF MD 2, Anne Arundel, MD

Built 1991 Load: 56.7 t ADT: 61,602

MCDANIEL ROAD

Good

Over: PINEY BRANCH

0.76 MI SE OF MD RTE 228, Charles, MD

Built 2015 Load: 56.7 t ADT: 542

US 15 SB

Good

Over: TUSCARORA CREEK

1/4 MI. N. OF MONOCACY BL, Frederick, MD

Built 1950 Load: 56.7 t ADT: 45,700

SNAKE LANE

Good

Over: JAMES RUN

0.21 MI E OF MD 136, Harford, MD

Built 2019 Load: 56.7 t ADT: 529

TRIADELPHIA ROAD

Good

Over: MIDDLE PATUXENT RIVER

1.2 MI S OF MD RTE 144, Howard, MD

Built 1986 Load: 56.7 t ADT: 2,474

IS 195 RAMP 'D'

Good

Over: AMTRAK, STONY RUN

0.14 MI S OF IS 195, Anne Arundel, MD

Built 1990 Load: 57.1 t ADT: 5,631

CLARK ROAD

Good

Over: TRIBUTARY TO PINEY RUN

0.5 MI. W. OF RIDGE RD., Anne Arundel, MD

Built 2007 Load: 57.1 t ADT: 1,531

US 1

Good

Over: LITTLE GUNPOWDER FALLS

ON HARFORD CO LINE, Baltimore, MD

Built 2010 Load: 57.1 t ADT: 22,152

MD 702

Good

Over: DEEP CREEK

0.68 MILE EAST OF MD 150, Baltimore, MD

Built 1989 Load: 57.1 t ADT: 27,871

IS 95 NB & SB

Good

Over: DESOTO RD

Milepost M52.7, Baltimore city, MD

Built 1976 Load: 57.1 t ADT: 94,828

MD 30

Good

Over: SHILOH ROAD

2.276 M S OF MD 482, Carroll, MD

Built 2007 Load: 57.1 t ADT: 9,200

MOUNTVILLE ROAD

Good

Over: TUSCARORA CREEK

0.19 MI NE OF ADAMSTOWN R, Frederick, MD

Built 1989 Load: 57.1 t ADT: 3,284

S. COURT STREET

Good

Over: CARROLL CREEK

595' SOUTH OF MD 144, Frederick, MD

Built 1988 Load: 57.1 t ADT: 8,370

MONOCACY BOULEVARD

Good

Over: CARROLL CREEK

0.1 MI S OF E CHURCH ST, Frederick, MD

Built 2012 Load: 57.1 t ADT: 16,392

DAISY ROAD

Good

Over: CATTAIL CREEK

0.5 MI N UNION CHAPEL RD, Howard, MD

Built 2017 Load: 57.1 t ADT: 1,679

WHITES FERRY ROAD

Good

Over: BROAD RUN TRIBUTARY

2 MI W OF JCT SR 109, Montgomery, MD

Built 1998 Load: 57.1 t ADT: 1,999

DAHLGREN ROAD

Good

Over: PAINT BRANCH

GSA at White Oak, MD. I-, Montgomery, MD

Built 2009 Load: 57.1 t ADT: 110

JUMPERS HOLE ROAD

Good

Over: TRIBUTARY TO MAGOTHY RIV

0.56 Mi SOUTH OF JCT RT 2, Anne Arundel, MD

Built 2001 Load: 57.6 t ADT: 11,903

IS 83 NBR

Good

Over: NCR TRAIL & LITTLE FALLS

0.55 MILE SOUTH OF MD 45, Baltimore, MD

Built 2006 Load: 57.6 t ADT: 50,431

MOUNT VISTA ROAD

Good

Over: BROAD RUN

0.35 MI E OF US ROUTE 1, Baltimore, MD

Built 1998 Load: 57.6 t ADT: 1,034

US 15 NBR

Good

Over: TUSCARORA CREEK

1/4 MI. N. OF MONOCACY BL, Frederick, MD

Built 1972 Load: 57.6 t ADT: 45,700

Showing 4,701-4,750 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.