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 299

Fair

Over: JACOBS CREEK

1.27 MILES S OF MD 290, Kent, MD

Built 1938 Load: 36.3 t ADT: 1,272

US 1 SB

Fair

Over: PATUXENT RIVER

ON HOWARD CO LINE, Prince George's, MD

Built 1970 Load: 36.3 t ADT: 16,752

MD 193

Fair

Over: NORTHWEST BRANCH

0.37 MILE WEST OF MD 193B, Prince George's, MD

Built 1956 Load: 36.3 t ADT: 29,880

I-495 O.L.

Fair

Over: AMTRAK

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

Built 1964 Load: 36.3 t ADT: 226,100

MD 5 NB

Fair

Over: PISCATAWAY CREEK

2.13 MILES N OF MD 373, Prince George's, MD

Built 1969 Load: 36.3 t ADT: 32,251

EAST MAPLE AVENUE

Fair

Over: INDIAN CREEK

0.03 MI NE OF SYCAMORE RD, Prince George's, MD

Built 1984 Load: 36.3 t ADT: 875

OLD ARDWICK-ARDMOR

Fair

Over: TRIB TO BALD HILL BRANCH

1.04 MILES E OF IS 95, Prince George's, MD

Built 1964 Load: 36.3 t ADT: 5,463

S LANDOVER ACCESS

Fair

Over: BEAVERDAM CREEK

0.5 MI N MD 202, Prince George's, MD

Built 1979 Load: 36.3 t ADT: 853

N LANDOVER ACCESS

Fair

Over: BEAVERDAM CREEK

0.5 MI N MD 202, Prince George's, MD

Built 1979 Load: 36.3 t ADT: 853

MD 363

Fair

Over: S BRANCH OF ROCK CREEK

0.21 M E OF EARL WEBST RD, Somerset, MD

Built 1977 Load: 36.3 t ADT: 2,245

US 13 NB

Fair

Over: BACK CREEK

0.19 MILE SOUTH OF MD 413, Somerset, MD

Built 1934 Load: 36.3 t ADT: 13,630

IS 70 WB

Fair

Over: CRYSTAL FALLS DRIVE

1.98 MILES WEST OF MD 66, Washington, MD

Built 1968 Load: 36.3 t ADT: 58,600

KEMPS MILL ROAD

Fair

Over: CONOCOCHEAGUE CREEK

0.85 W OF WALNUT POINT RD, Washington, MD

Built 1976 Load: 36.3 t ADT: 1,187

US 13 SB

Fair

Over: LEONARD MILL POND

0.4 MILE SOUTH OF MD 675B, Wicomico, MD

Built 1952 Load: 36.3 t ADT: 38,793

NINEPIN BRANCH RD

Fair

Over: NINEPIN BRANCH

0.42 MI S OF MD 374, Worcester, MD

Built 1994 Load: 36.3 t ADT: 172

MD 51

Fair

Over: CSX TRANS., MD 61

0.40 MI E OF MD 51A, Allegany, MD

Built 1965 Load: 36.7 t ADT: 14,721

MD 140

Fair

Over: GWYNNS FALLS

0.20 MI N OF MD 940, Baltimore, MD

Built 1973 Load: 36.7 t ADT: 33,480

MD 41

Fair

Over: TRIB TO HERRING RUN

0.4 M N OF TAYLOR AVENUE, Baltimore, MD

Built 1963 Load: 36.7 t ADT: 31,890

IS 95

Fair

Over: WEST BRANCH HERBERT RUN

0.22 MILE SOUTH OF US 1, Baltimore, MD

Built 1969 Load: 36.7 t ADT: 176,834

HARTLEY MILL ROAD

Fair

Over: LONG GREEN CREEK

0.2 MI NW OF HARFORD RD, Baltimore, MD

Built 1975 Load: 36.7 t ADT: 306

DEANWOOD ROAD

Fair

Over: TRIBUTARY TO HERRING RUN

0.2 MI E OF MD RTE 542, Baltimore, MD

Built 1966 Load: 36.7 t ADT: 4,715

MD 97

Fair

Over: SOUTH BRANCH PATAPSCO RI

ON HOWARD CO LINE, Carroll, MD

Built 1973 Load: 36.7 t ADT: 8,770

OLD TELEGRAPH ROAD

Fair

Over: BACK CREEK

0.6 MI S OF MD 286, Cecil, MD

Built 1930 Load: 36.7 t ADT: 525

MD 75

Fair

Over: LINGANORE CREEK

0.73 MI N OF MD 75FC, Frederick, MD

Built 1968 Load: 36.7 t ADT: 4,752

CRELLIN MINE ROAD

Fair

Over: SNOWY CREEK

0.2 MI WEST OF CRELLIN ST, Garrett, MD

Built 1960 Load: 36.7 t ADT: 35

HUMBERSON ROAD

Fair

Over: BUFFALO RUN

.5 MI NW OLD GOOD HOPE RD, Garrett, MD

Built 1935 Load: 36.7 t ADT: 133

US 29 SB

Fair

Over: MIDDLE PATUXENT RIVER

1.05 MILES SOUTH OF MD 32, Howard, MD

Built 1970 Load: 36.7 t ADT: 52,913

MD 97

Fair

Over: CATTAIL CREEK

1.31 MILES N OF MONT CO, Howard, MD

Built 1927 Load: 36.7 t ADT: 13,200

LAKE POTOMAC DRIVE

Fair

Over: WATTS BRANCH

0.1 MI N OF JCT SR 190, Montgomery, MD

Built 1985 Load: 36.7 t ADT: 139

US 50 WB

Fair

Over: SOUTH BRANCH SKIPTON CRE

0.66 MILE WEST OF MD 662B, Talbot, MD

Built 1948 Load: 36.7 t ADT: 31,938

US 40

Fair

Over: LITTLE BEAVER CREEK

1.54 MILES EAST OF MD 66, Washington, MD

Built 1936 Load: 36.7 t ADT: 5,972

HANGING ROCK ROAD

Fair

Over: LANES RUN

0.15 MI N OF LANES RUN RD, Washington, MD

Built 1984 Load: 36.7 t ADT: 340

TWIN ARCH ROAD

Fair

Over: SOUTH BR PATAPSCO RIVER

ON HOWARD COUNTY LINE, Carroll, MD

Built 1900 Load: 36.9 t ADT: 98

US 113

Fair

Over: PURNELL BRANCH

0.73 MILE NORTH OF MD 365, Worcester, MD

Built 1975 Load: 36.9 t ADT: 10,491

LOCUST GROVE ROAD

Fair

Over: WILLS CREEK

AT US 40 ALT, Allegany, MD

Built 1900 Load: 37.2 t ADT: 142

MD 648E

Fair

Over: MARLEY CREEK

0.11 MI S OF MD 270, Anne Arundel, MD

Built 1976 Load: 37.2 t ADT: 19,703

IS 95 RAMP H

Fair

Over: OLD ANNAN RD,MIDDLE BR

0.3 MI E RUSSELL ST, Baltimore city, MD

Built 1979 Load: 37.2 t ADT: 35,059

IS 895

Fair

Over: BOSTON STREET

MILE POINT 11.53, Baltimore city, MD

Built 1957 Load: 37.2 t ADT: 77,721

IS 895

Fair

Over: AMTRAK, NSRR & CSXT

Milepost M12.86, Baltimore city, MD

Built 1957 Load: 37.2 t ADT: 72,034

MD 313

Fair

Over: SPRING BRANCH

2.33 MILE SOUTH OF MD 314, Caroline, MD

Built 1955 Load: 37.2 t ADT: 7,160

SPRINGDALE RD

Fair

Over: LITTLE PIPE CREEK

1.09 MILES N OF MD 31, Carroll, MD

Built 1900 Load: 37.2 t ADT: 457

MD 273

Fair

Over: LITTLE ELK CREEK

1.03 MILE WEST OF MD 213, Cecil, MD

Built 1973 Load: 37.2 t ADT: 8,002

MD 234

Fair

Over: MIRANT POWER COMPANY

0.19 MILE EAST OF US 301, Charles, MD

Built 1967 Load: 37.2 t ADT: 6,741

MD 257

Fair

Over: CSX TRANS

0.08 MILE EAST OF US 301, Charles, MD

Built 1967 Load: 37.2 t ADT: 6,290

BILLINGSLEY ROAD

Fair

Over: MATTAWOMAN CREEK

1.5 MI E OF MD RTE 224, Charles, MD

Built 1984 Load: 37.2 t ADT: 7,843

SOUTH MARKET STREE

Fair

Over: CARROLL CREEK

510' SOUTH OF MD 144, Frederick, MD

Built 1988 Load: 37.2 t ADT: 8,900

IS 95 SB

Fair

Over: LITTLE PATUXENT RIVER

0.46 MILE SOUTH OF MD 32, Howard, MD

Built 1971 Load: 37.2 t ADT: 104,355

I-895 NB

Fair

Over: B&O RR,COUNTY ROADS

Milepost 0.7, Howard, MD

Built 1972 Load: 37.2 t ADT: 7,203

CLARA BARTON PARKW

Fair

Over: LITTLE FALLS BRANCH

4.5 MILES SOUTH OF I-495., Montgomery, MD

Built 1961 Load: 37.2 t ADT: 16,120

4TH STREET

Fair

Over: TRIB TO PATUXENT RIVER

0.1 MI SOUTH OF MD 198 EB, Prince George's, MD

Built 1950 Load: 37.2 t ADT: 1,240

Showing 2,151-2,200 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.