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

US 220

Fair

Over: TRIB TO NORTH BR POTOMAC

1.46 MI N OF MD 830A, Allegany, MD

Built 1929 Load: 20.4 t ADT: 7,111

OFFUTT ROAD

Fair

Over: TRIBUTARY TO BRICE RUN

0.92 MI S OF MD 26, Baltimore, MD

Built 1920 Load: 20.4 t ADT: 3,037

MD 4

Fair

Over: PATUXENT RIVER & TOWN CR

ON ST MARYS CO LINE, Calvert, MD

Built 1977 Load: 20.4 t ADT: 28,338

HARNEY ROAD

Fair

Over: ALLOWAY CREEK

1.26 MILES S OF PA LINE, Carroll, MD

Built 1919 Load: 20.4 t ADT: 1,911

STONE ROAD

Fair

Over: BIG PIPE CREEK

0.37 MI SE OF MAYBERRY RD, Carroll, MD

Built 1984 Load: 20.4 t ADT: 448

MD 17

Fair

Over: CATOCTIN CREEK

0.6 MILE SOUTH OF IS 70, Frederick, MD

Built 1928 Load: 20.4 t ADT: 3,891

WALNUT TREE ROAD

Fair

Over: CYPRESS BRANCH

0.8 MI NW OF BIG STONE RD, Kent, MD

Built 1968 Load: 20.4 t ADT: 266

BELLEVUE FERRY DOC

Fair

Over: TRED AVON RIVER

1 MI NE OF OXFORD, Talbot, MD

Built 2002 Load: 20.4 t ADT: 2,005

STOKES ROAD

Fair

Over: STONEY CREEK

50M EAST OF E PALMER RD, Montgomery, MD

Built 1950 Load: 20.8 t ADT: 2,000

PARADISE STREET

Fair

Over: NEFF RUN

0.14 MI S OF MD 36, Allegany, MD

Built 1994 Load: 20.9 t ADT: 920

MD 165

Fair

Over: LITTLE GUNPOWDER FALLS

ON HARFORD CO LINE, Baltimore, MD

Built 1931 Load: 20.9 t ADT: 7,011

TRAPPE ROAD

Fair

Over: TRIBUTARY TO BEAR CREEK

0.8 MI EAST OF MD 157, Baltimore, MD

Built 1970 Load: 20.9 t ADT: 18,600

BERBERI ROAD

Fair

Over: TRIBUTARY TO NORTH BRANC

1.3 MI E OF MD 140, Carroll, MD

Built 2005 Load: 20.9 t ADT: 140

LIVERPOOL PT ROAD

Fair

Over: BEAVERDAM CREEK

0.1 MI W ADAMS WILLETT RD, Charles, MD

Built 1924 Load: 20.9 t ADT: 409

MERRIMACK PLACE

Fair

Over: DITCHLEY PRONG

0.1 MI E SHILOH CHURCH RD, Charles, MD

Built 1920 Load: 20.9 t ADT: 50

US 15

Fair

Over: POTOMAC RIVER, CSX, C&O

POINT OF ROCKS, Frederick, MD

Built 1939 Load: 20.9 t ADT: 20,473

MD 17

Fair

Over: MIDDLE CREEK

1.13 MILES N OF MD 383, Frederick, MD

Built 1923 Load: 20.9 t ADT: 5,891

US 40 ALT

Fair

Over: CATOCTIN CREEK

0.05 M E OF MARKER ROAD, Frederick, MD

Built 1923 Load: 20.9 t ADT: 9,212

MD 39

Fair

Over: CSX TRANSPORTATION

0.05 MILE WEST OF US 219, Garrett, MD

Built 1994 Load: 20.9 t ADT: 5,671

U.S. ROUTE 40

Fair

Over: SUSQUEHANNA RIVER-PA RR

HARFORD-CECIL CO LINE, Harford, MD

Built 1939 Load: 20.9 t ADT: 25,780

FALSTONE AVENUE

Fair

Over: LITTLE FALLS BRANCH

0.1 MI E OF WARWICK AVE, Montgomery, MD

Built 1965 Load: 20.9 t ADT: 50

SOUTH FARM ROAD

Fair

Over: PAINT BRANCH

CAPITAL BELTWAY TO EXIT 2, Prince George's, MD

Built 1955 Load: 20.9 t ADT: 400

CEDAR POINT RD

Fair

Over: HARPERS CREEK

0.7 MI N OF BRONSON RD, St. Mary's, MD

Built 1952 Load: 20.9 t ADT: 1,440

CEDAR POINT RD

Fair

Over: GOOSE CREEK

0.9 MI NE OF MACAULAY AVE, St. Mary's, MD

Built 1952 Load: 20.9 t ADT: 1,440

MD 90

Fair

Over: ASSAWOMAN BAY

1.17 MILES WEST OF MD 528, Worcester, MD

Built 1971 Load: 20.9 t ADT: 30,510

US 40 SCN

Fair

Over: FIFTEEN MILE CREEK

0.19 M E OF BR NO 0113300, Allegany, MD

Built 1917 Load: 21.3 t ADT: 281

US RTE 50 WB

Fair

Over: CHESAPEAKE BAY

6 MI E OF MD RTE 2, Anne Arundel, MD

Built 1973 Load: 21.3 t ADT: 39,114

MD 311

Fair

Over: COOLSPRING BRANCH

0.3 M N OF GOODEN ROAD, Caroline, MD

Built 1952 Load: 21.3 t ADT: 3,230

MD 86

Fair

Over: BR OF GUNPOWDER FALLS

0.24 MI S OF PA LINE, Carroll, MD

Built 1929 Load: 21.3 t ADT: 3,322

MD 32

Fair

Over: LIBERTY RESERVOIR

2.53 MILE SOUTH OF MD 91, Carroll, MD

Built 1952 Load: 21.3 t ADT: 14,020

AMMENDALE ROAD

Fair

Over: TRIB TO INDIAN CREEK

0.26 MI W OF US 1, Prince George's, MD

Built 1948 Load: 21.3 t ADT: 1,743

US 13 NB

Fair

Over: KINGS CREEK

0.18 MILE SOUTH OF MD 920, Somerset, MD

Built 1962 Load: 21.3 t ADT: 20,870

MAIN ST-LONACONING

Fair

Over: GEORGES CREEK

0.02 MI E OF MD 36, Allegany, MD

Built 1957 Load: 21.8 t ADT: 153

MD 100

Fair

Over: MARLEY CREEK

0.79 MILE WEST OF MD 2, Anne Arundel, MD

Built 1964 Load: 21.8 t ADT: 73,112

MD 25

Fair

Over: DEEP RUN

0.05 MILE SOUTH OF MD 130, Baltimore, MD

Built 1961 Load: 21.8 t ADT: 26,821

BASIN RUN ROAD

Fair

Over: BASIN RUN

0.01 MI W OF HARMONY C DR, Cecil, MD

Built 1983 Load: 21.8 t ADT: 157

MD 795

Fair

Over: CAMBRIDGE CREEK

0.04 MI E OF MARKET ST, Dorchester, MD

Built 1938 Load: 21.8 t ADT: 9,422

MD 75

Fair

Over: PLEASANT BRANCH

1.71 MILES N OF MD 355, Frederick, MD

Built 1930 Load: 21.8 t ADT: 7,952

CULLUM ROAD

Fair

Over: TRIBUTARY OF JAMES RUN

0.3 MILE N OF CRESWELL RD, Harford, MD

Built 1920 Load: 21.8 t ADT: 300

OLD PYLESVILLE RD

Fair

Over: BROAD CREEK

0.4 MILES N OF MD 543, Harford, MD

Built 1928 Load: 21.8 t ADT: 161

MD 290

Fair

Over: MILL CREEK

0.60 MILE NORTH OF MD 213, Kent, MD

Built 1947 Load: 21.8 t ADT: 2,445

BW PARKWAY ACCESS

Fair

Over: MD ROUTE 201

0.1 MILES NORTH OF U.S. R, Prince George's, MD

Built 1954 Load: 21.8 t ADT: 34,075

MD 456

Fair

Over: BR OF WYE RIVER

0.47 MILE NORTH OF US 50, Queen Anne's, MD

Built 1929 Load: 21.8 t ADT: 690

MASON ROAD

Fair

Over: EVITTS CREEK

1.26 MI N OF ZEMBOWER RD, Allegany, MD

Built 1950 Load: 22.2 t ADT: 219

MD 128

Fair

Over: CSX TRANSPORTATION

0.48 MILES EAST OF MD 30, Baltimore, MD

Built 1947 Load: 22.2 t ADT: 15,840

RUXTON ROAD

Fair

Over: MTA LIGHT RAIL

100 FEET W OF BELLONA AVE, Baltimore, MD

Built 1960 Load: 22.2 t ADT: 9,190

DANCE MILL ROAD

Fair

Over: DULANEY VALLEY BRANCH

0.17 MI N OF DUL VALL RD, Baltimore, MD

Built 1920 Load: 22.2 t ADT: 1,195

GUNPOWDER ROAD

Fair

Over: COMPASS RUN

0.3 MI S. OF BCKLYSVIL RD, Baltimore, MD

Built 1920 Load: 22.2 t ADT: 1,755

CROMWELL VALLEY PA

Fair

Over: TRIBUTARY TO MINEBANK RU

0.4 MI. NW CROMWELL BR RD, Baltimore, MD

Built 2005 Load: 22.2 t ADT: 100

DOUBLE HILLS ROAD

Fair

Over: HERRING RUN

0.25 MI NE OF MD 404, Caroline, MD

Built 1913 Load: 22.2 t ADT: 516

Showing 1,251-1,300 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.