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 175 RAMP 'H'

Fair

Over: LITTLE PATUXENT RIVER

0.27 MI S OF US 29, Howard, MD

Built 1970 Load: 41.3 t ADT: 1,170

LEISHEAR ROAD

Fair

Over: HAMMOND BRANCH

0.2 MI N OF MD RTE 216, Howard, MD

Built 1969 Load: 41.3 t ADT: 7,344

REDLAND ROAD

Fair

Over: CSXT RR & WMATA METRO

0.2 MI E OF MD RTE 355, Montgomery, MD

Built 1980 Load: 41.3 t ADT: 20,246

MD 193

Fair

Over: PAINT BRANCH

0.15 MILE WEST OF US 1, Prince George's, MD

Built 1955 Load: 41.3 t ADT: 41,260

MD 363

Fair

Over: E BRANCH OF ROCK CREEK

0.70 M W OF LONG POINT RD, Somerset, MD

Built 1976 Load: 41.3 t ADT: 2,245

HAYES LANDING ROAD

Fair

Over: NEWPORT CREEK

1.29 MI SE OF US RTE 113, Worcester, MD

Built 2000 Load: 41.3 t ADT: 130

GREEN SPRING ROAD

Fair

Over: MILL RUN

0.08 MI N OF MAIN ST, Allegany, MD

Built 1935 Load: 41.7 t ADT: 812

IS 97 NBR

Fair

Over: SEVERN RUN

0.81 MILE NORTH OF MD 3, Anne Arundel, MD

Built 1991 Load: 41.7 t ADT: 102,300

IS 97 SBR

Fair

Over: SEVERN RUN

0.81 MILE NORTH OF MD 3, Anne Arundel, MD

Built 1991 Load: 41.7 t ADT: 102,300

MD 100 EBR

Fair

Over: JUMPERS HOLE ROAD

0.67 MILE EAST OF MD 2, Anne Arundel, MD

Built 1971 Load: 41.7 t ADT: 26,792

MD 665 EB

Fair

Over: CHURCH CREEK

0.29 MILE EAST OF MD 2, Anne Arundel, MD

Built 1991 Load: 41.7 t ADT: 31,071

WISEBURG ROAD

Fair

Over: LITTLE FALLS

100 FT W OF GRAYSTONE RD, Baltimore, MD

Built 1988 Load: 41.7 t ADT: 1,600

I-83 RAMP H

Fair

Over: HILLEN STREET

I-83 OVER HILLEN STREET, Baltimore city, MD

Built 1975 Load: 41.7 t ADT: 82,593

IS 95 RAMP F

Fair

Over: GWYNNS FALLS

SB FROM WASHINGTON BLVD, Baltimore city, MD

Built 1982 Load: 41.7 t ADT: 6,160

I-95 RAMP OP

Fair

Over: KEITH AVENUE

Milepost M56.5, Baltimore city, MD

Built 1976 Load: 41.7 t ADT: 3,245

IS 95 VIADUCT SB

Fair

Over: CONRAIL YARD

Milepost M56.9, Baltimore city, MD

Built 1980 Load: 41.7 t ADT: 72,095

MD 313

Fair

Over: MARSHYHOPE CREEK

1.71 MILE SOUTH OF MD 308, Caroline, MD

Built 1962 Load: 41.7 t ADT: 9,737

MD 850C

Fair

Over: TALBOT BRANCH

0.03 M S OF FRANKLIN RD, Carroll, MD

Built 1931 Load: 41.7 t ADT: 999

OLD ELK NECK ROAD

Fair

Over: MILL CREEK

0.4 MI S OF MD 7, Cecil, MD

Built 2004 Load: 41.7 t ADT: 109

DEVILBISS BRIDGE R

Fair

Over: FISHING CREEK

0.75 MI W OF DUBLIN RD, Frederick, MD

Built 1979 Load: 41.7 t ADT: 3,371

SANG RUN ROAD

Fair

Over: SANG RUN

SANG RUN ROAD, Garrett, MD

Built 1997 Load: 41.7 t ADT: 454

US 40 & RMPS 5 & 6

Fair

Over: BR OF SWAN CREEK

0.03 MILE SOUTH OF MD 22, Harford, MD

Built 1968 Load: 41.7 t ADT: 26,751

ST CLAIR BRIDGE RD

Fair

Over: DEER CREEK

1.0 MILES S OF MD 165, Harford, MD

Built 1954 Load: 41.7 t ADT: 563

EDGEWOOD ROAD

Fair

Over: OTTER POINT CREEK (N)

0.3 MILES S OF MD 7, Harford, MD

Built 1933 Load: 41.7 t ADT: 9,886

MINK HOLLOW ROAD

Fair

Over: PATUXENT RIVER

HOWARD-MONTGOMERY CO LINE, Howard, MD

Built 1908 Load: 41.7 t ADT: 1,209

CHANDLEE MILL ROAD

Fair

Over: JAMES CREEK

0.4 MI S OF GOLD MINE RD, Montgomery, MD

Built 1972 Load: 41.7 t ADT: 302

US 50 EB/301 NB

Fair

Over: PINEY CREEK

1.21 MILES EAST OF MD 552, Queen Anne's, MD

Built 1950 Load: 41.7 t ADT: 65,701

MD 304

Fair

Over: CORSICA CREEK

0.88 MILE WEST OF MD 213, Queen Anne's, MD

Built 1985 Load: 41.7 t ADT: 1,732

MD 544

Fair

Over: RED LION BRANCH

0.56 MILE EAST OF MD 290, Queen Anne's, MD

Built 1972 Load: 41.7 t ADT: 1,551

GREENSPRING ROAD

Fair

Over: WYE RIVER

0.15 MI SE OF MD 301, Queen Anne's, MD

Built 1992 Load: 41.7 t ADT: 111

MD 34

Fair

Over: POTOMAC RIV & C&O CANAL

ON WEST VIRGINIA ST LINE, Washington, MD

Built 2005 Load: 41.7 t ADT: 5,900

BROWNSVILLE ROAD

Fair

Over: ISRAEL CREEK

0.2 MI W OF MD RTE 67, Washington, MD

Built 1904 Load: 41.7 t ADT: 325

US 13 BUS NB

Fair

Over: NORFOLK SOUTHERN RR

1.0 MILE NORTH OF US 50BU, Wicomico, MD

Built 1930 Load: 41.7 t ADT: 16,405

US 13 BUS NB

Fair

Over: TONYTANK POND

0.38 MILE NORTH OF MD 513, Wicomico, MD

Built 1995 Load: 41.7 t ADT: 11,480

MD 313

Fair

Over: NANTICOKE RIVER

ON DORCHESTER CO LINE, Wicomico, MD

Built 1987 Load: 41.7 t ADT: 2,420

MD 374

Fair

Over: POCOMOKE RIVER

ON WICOMICO CO LINE, Worcester, MD

Built 2001 Load: 41.7 t ADT: 1,196

IS 68 RAMP 'E'(4)

Fair

Over: CENTRE ST, QUEEN CITY DR

0.52 MI E OF US 48H, Allegany, MD

Built 1968 Load: 42.2 t ADT: 6,507

VALLEY STREET

Fair

Over: WILLS CREEK / WMSRR

0.20 MI S OF US 40 ALT, Allegany, MD

Built 1955 Load: 42.2 t ADT: 6,149

MD 10 NBR

Fair

Over: FURNACE CREEK

0.38 MI N OF MD 270, Anne Arundel, MD

Built 1973 Load: 42.2 t ADT: 47,240

MD 10 SBR

Fair

Over: FURNACE CREEK

0.38 MI N OF MD 270, Anne Arundel, MD

Built 1973 Load: 42.2 t ADT: 47,240

MD 100 WBR

Fair

Over: DEEP RUN

ON HOWARD COUNTY LINE, Anne Arundel, MD

Built 1996 Load: 42.2 t ADT: 56,840

MARLEY NECK BOULEV

Fair

Over: MARLEY CREEK

1 MI SW of MD 173, Anne Arundel, MD

Built 1982 Load: 42.2 t ADT: 13,455

MD 45

Fair

Over: PINEY CREEK

0.06 MI N OF SPARKS RD, Baltimore, MD

Built 1975 Load: 42.2 t ADT: 23,992

MD 7

Fair

Over: BEAN BRANCH

2.03 MI S OF HARFORD CO, Baltimore, MD

Built 1975 Load: 42.2 t ADT: 11,470

LOMBARD STREET

Fair

Over: NORFOLK SOUTHERN RAILROA

LOMBARD ST OV NS RR, Baltimore city, MD

Built 1900 Load: 42.2 t ADT: 8,900

ANTHONY MILL ROAD

Fair

Over: WATTS CREEK

2.0 MILES SOUTH OF MD 317, Caroline, MD

Built 2004 Load: 42.2 t ADT: 678

MD 27

Fair

Over: MORGAN RUN

1.68 MILE NORTH OF MD 407, Carroll, MD

Built 1922 Load: 42.2 t ADT: 14,091

US 40 EB

Fair

Over: LITTLE ELK CREEK

0.19 MILE EAST OF MD 279, Cecil, MD

Built 1939 Load: 42.2 t ADT: 15,537

US 40 WB

Fair

Over: LITTLE ELK CREEK

0.19 MILE EAST OF MD 279, Cecil, MD

Built 1939 Load: 42.2 t ADT: 16,172

MD 279

Fair

Over: LITTLE ELK CREEK

0.19 MILE SOUTH OF MD 545, Cecil, MD

Built 1968 Load: 42.2 t ADT: 13,600

Showing 2,451-2,500 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.