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 267

Fair

Over: RED RUM RUN

0.19 M W OF MARKET STREET, Cecil, MD

Built 1915 Load: 56.7 t ADT: 1,680

MD 806A

Fair

Over: HIGH RUN

0.41 MILE NORTH OF US 15G, Frederick, MD

Built 1950 Load: 56.7 t ADT: 1,072

STOTTLEMYER ROAD

Fair

Over: MIDDLE CREEK

0.1 MI NE OF MD 17, Frederick, MD

Built 1977 Load: 56.7 t ADT: 1,456

BRIGHTON DAM ROAD

Fair

Over: REDDY BRANCH

0.9 MI E OF JCT SR 97, Montgomery, MD

Built 1910 Load: 56.7 t ADT: 743

IS 70 EB

Fair

Over: CSX TRANS.

0.53 MILE WEST OF IS 81, Washington, MD

Built 1965 Load: 56.7 t ADT: 22,150

IS 70 WB

Fair

Over: CSX TRANS.

0.53 MILE WEST OF IS 81, Washington, MD

Built 1965 Load: 56.7 t ADT: 23,600

MD 47

Fair

Over: BRANCH OF NORTH BRANCH

0.09 MI S OF PA LINE, Allegany, MD

Built 1923 Load: 57.1 t ADT: 2,042

MD 648E

Fair

Over: PATAPSCO RIVER

ON BALTIMORE COUNTY LINE, Anne Arundel, MD

Built 1992 Load: 57.1 t ADT: 12,630

MD 41

Fair

Over: TRIB TO HERRING RUN

0.14 M N OF BALTO CITY, Baltimore, MD

Built 1963 Load: 57.1 t ADT: 29,990

IS 95 SBR

Fair

Over: PROPOSED LANSDOWNE ROAD

0.31 MI S OF BALT CITY, Baltimore, MD

Built 1971 Load: 57.1 t ADT: 182,461

IS 795 SBR

Fair

Over: CSX TRANSPORTATION

0.82 MI N OF MCDONOUGH RD, Baltimore, MD

Built 1984 Load: 57.1 t ADT: 110,982

SHELBOURNE ROAD

Fair

Over: TRIBUTARY TO WEST BRANCH

0.17 MI S OF LOCUST AVE, Baltimore, MD

Built 1930 Load: 57.1 t ADT: 3,000

HANOVER STREET

Fair

Over: CSX RAILROAD

HANOVER ST OVER CSX RR, Baltimore city, MD

Built 1900 Load: 57.1 t ADT: 27,130

RELOCATED MONROE S

Fair

Over: GWYNNS FALLS

MONROE ST & ANNAP RD, Baltimore city, MD

Built 1975 Load: 57.1 t ADT: 19,110

MD 27

Fair

Over: MARYLAND MIDLAND RR

0.4 MILE NORTH OF MD 808B, Carroll, MD

Built 1991 Load: 57.1 t ADT: 10,690

TANK ROAD

Fair

Over: NORTH BR PATAPSCO RIVER

0.53 MI S OF WESLEY RD, Carroll, MD

Built 1974 Load: 57.1 t ADT: 174

LITTLE EGYPT RD

Fair

Over: EAST BRANCH CHRISTIANA R

0.19 MI W OF MD 896, Cecil, MD

Built 1968 Load: 57.1 t ADT: 1,401

MD 135

Fair

Over: SAVAGE RIVER

0.09 MI W OF ALLEGANY CO, Garrett, MD

Built 1937 Load: 57.1 t ADT: 3,150

DORSEY RUN ROAD

Fair

Over: DORSEY RUN

0.5 MI S OF MD RTE 175, Howard, MD

Built 1955 Load: 57.1 t ADT: 6,745

CRABBS BRANCH WAY

Fair

Over: CRABBS CREEK

0.1 MI W OF REDLAND RD, Montgomery, MD

Built 1982 Load: 57.1 t ADT: 16,564

BW PARKWAY

Fair

Over: BEAVERDAM ROAD

2.3 MILES NORTH OF MD ROU, Prince George's, MD

Built 1953 Load: 57.1 t ADT: 80,000

BW PARKWAY (NBL)

Fair

Over: MD ROUTE 197 (EBL)

1.9 MILES NORTH OF MD ROU, Prince George's, MD

Built 2001 Load: 57.1 t ADT: 88,000

CEDAR RIDGE ROAD

Fair

Over: MEADOW BROOK

0.2 MI S OF IS 70, Washington, MD

Built 1935 Load: 57.1 t ADT: 900

LWR GEORGES CRK RD

Fair

Over: GEORGES CREEK

0.01 MI W OF MD 939, Allegany, MD

Built 1993 Load: 57.6 t ADT: 598

PUTTY HILL AVENUE

Fair

Over: TRIBUTARY TO HERRING RUN

0.25 MI W OF MD 41, Baltimore, MD

Built 1961 Load: 57.6 t ADT: 12,957

MD 91

Fair

Over: NORTH BRANCH PATAPSCO RI

.04 MILE NORTH OF MD 879D, Carroll, MD

Built 1965 Load: 57.6 t ADT: 5,640

TWIN ARCH ROAD

Fair

Over: SOUTH BR PATAPSCO RIVER

ON HOWARD CO LINE, Carroll, MD

Built 1987 Load: 57.6 t ADT: 4,137

MD 279

Fair

Over: BIG ELK CREEK

0.04 MILE NORTH OF MD 268, Cecil, MD

Built 1960 Load: 57.6 t ADT: 14,060

PETERSVILLE ROAD

Fair

Over: LITTLE CATOCTIN CREEK

0.61 MI N OF MD 871G, Frederick, MD

Built 1941 Load: 57.6 t ADT: 3,270

IS 270 & CD RDS

Fair

Over: WATTS BRANCH

0.21 MILE NORTH OF MD 28, Montgomery, MD

Built 1955 Load: 57.6 t ADT: 239,460

IS 495

Fair

Over: BRUNETT AVENUE

0.297 MILE WEST OF US 29, Montgomery, MD

Built 1959 Load: 57.6 t ADT: 232,010

PURDUM ROAD

Fair

Over: BENNETT CREEK TRIBUTARY

0.6 MI N OF MOUNTAIN VIEW, Montgomery, MD

Built 1975 Load: 57.6 t ADT: 830

CATTAIL ROAD

Fair

Over: DRY SENECA CREEK

1.5 MI S OF JCT SR 28, Montgomery, MD

Built 1975 Load: 57.6 t ADT: 2,435

I-495 I.L.

Fair

Over: AMTRAK

0.18 MILE SOUTH OF MD 450, Prince George's, MD

Built 1964 Load: 57.6 t ADT: 226,100

IS 95 NBR

Fair

Over: PROPOSED LANSDOWNE ROAD

0.31 MI S OF BALT CITY, Baltimore, MD

Built 1972 Load: 58.0 t ADT: 182,461

BELFAST ROAD

Fair

Over: PINEY CREEK

0.2 MI E. OF IS83,EXIT 24, Baltimore, MD

Built 1953 Load: 58.0 t ADT: 4,918

I-695 INNER LOOP

Fair

Over: P AND B RAILROAD

0.3 MI W OF MD 151, Baltimore, MD

Built 1997 Load: 58.0 t ADT: 11,133

FALLS ROAD

Fair

Over: MTA, JONES FALLS, & C. M

ON RAMP, JFX-FALLS RD, Baltimore city, MD

Built 1960 Load: 58.0 t ADT: 6,335

KAYS MILL ROAD

Fair

Over: BEAVER RUN

0.44 MI S OF MD 140, Carroll, MD

Built 1978 Load: 58.0 t ADT: 1,671

PATAPSCO ROAD

Fair

Over: WEST BR PATAPSCO RIVER

0.04 MI N OF WESLEY ROAD, Carroll, MD

Built 1980 Load: 58.0 t ADT: 706

MD 268

Fair

Over: AMTRAK

0.51 MILE WEST OF MD 279, Cecil, MD

Built 1987 Load: 58.0 t ADT: 6,284

SLICERS MILL ROAD

Fair

Over: STONE RUN

0.7 M NW OF US RTE 1, Cecil, MD

Built 1984 Load: 58.0 t ADT: 390

SUGARLAND ROAD

Fair

Over: DRY SENECA CREEK

2.3 MI S OF JCT SR 28, Montgomery, MD

Built 1971 Load: 58.0 t ADT: 433

HARRIS ROAD WEST

Fair

Over: LITTLE MONOCACY RIVER

0.7 MI S OF MT EPHRAM RD, Montgomery, MD

Built 1925 Load: 58.0 t ADT: 161

WOOTTON PARKWAY

Fair

Over: WATTS BRANCH

0.9 MI W OF JCT SR 189, Montgomery, MD

Built 1972 Load: 58.0 t ADT: 14,452

RESEARCH ROAD

Fair

Over: BEAVER DAM CREEK

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

Built 1966 Load: 58.0 t ADT: 600

BUS LOOP

Fair

Over: WMATA RAILROAD

1 mi. S. of Suitland Pkwy, Prince George's, MD

Built 1995 Load: 58.0 t ADT: 484

IS 70

Fair

Over: BR OF CONOCOCHEAGUE CREE

0.81 MILE EAST OF MD 63, Washington, MD

Built 1966 Load: 58.0 t ADT: 45,040

CEARFOSS PIKE

Fair

Over: CONOCOCHEAGUE CREEK

0.85 MI SE OF PA LINE, Washington, MD

Built 1977 Load: 58.0 t ADT: 999

BURNSIDE BRIDGE RD

Fair

Over: SHARMANS BRANCH

0.83 MI SW OF MD RTE 34, Washington, MD

Built 1978 Load: 58.0 t ADT: 310

Showing 3,101-3,150 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.