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

HANOVER ROAD

Fair

Over: DEEP RUN

0.3 MI W OF MD RTE 295, Anne Arundel, MD

Built 1958 Load: 24.0 t ADT: 4,585

VINEGAR HILL ROAD

Fair

Over: LITTLE GUNPOWDER FALLS

0.29 MI SE OF JERICHO RD, Baltimore, MD

Built 1894 Load: 24.0 t ADT: 552

GLENCOE ROAD

Fair

Over: GUNPOWDER FALLS

1 MI E OF YORK RD, Baltimore, MD

Built 1976 Load: 24.0 t ADT: 364

GWYNN OAK AVENUE

Fair

Over: TRIBUTARY TO DEAD RUN

0.18 MI N OF SECURITY BLV, Baltimore, MD

Built 1956 Load: 24.0 t ADT: 6,450

MD 225

Fair

Over: MATTAWOMAN CREEK

0.03 MILE EAST OF MD 224, Charles, MD

Built 1957 Load: 24.0 t ADT: 12,302

MD 355

Fair

Over: MONOCACY RIVER

2.29 MILES SOUTH OF MD 85, Frederick, MD

Built 1930 Load: 24.0 t ADT: 12,583

MANSFIELD ROAD

Fair

Over: CHERRY CREEK

0.74 MI W OF US RTE 219, Garrett, MD

Built 1986 Load: 24.0 t ADT: 97

STAFFORD ROAD

Fair

Over: HERRING RUN

0.01 MILE S OF LAPIDUM RD, Harford, MD

Built 1930 Load: 24.0 t ADT: 58

EDWARDS FERRY ROAD

Fair

Over: BROAD RUN

1 MI N OF WESTERLY ROAD, Montgomery, MD

Built 1982 Load: 24.0 t ADT: 312

MD 4 EB

Fair

Over: RACE TRACK RD

0.37 MILE SOUTH OF MD 717, Prince George's, MD

Built 1960 Load: 24.0 t ADT: 46,652

HIGH GERMANY ROAD

Fair

Over: SIDELING HILL CREEK

0.3 MI N OF IS 68, Washington, MD

Built 1961 Load: 24.0 t ADT: 153

MD 450

Fair

Over: SEVERN RIVER

0.31 MI W OF MD 648A, Anne Arundel, MD

Built 1995 Load: 24.5 t ADT: 18,874

ENTRANCE/EXIT PLAZ

Fair

Over: DAILY PARKING GARAGE

BWI DAILY GARAGE, Anne Arundel, MD

Built 2003 Load: 24.5 t ADT: 5,000

BACON ROAD

Fair

Over: FIRST MINE BRANCH

0.3 MI S OF HUNTER MILL R, Baltimore, MD

Built 1990 Load: 24.5 t ADT: 234

WINDEMERE PARKWAY

Fair

Over: DULANEY VALLEY BRANCH

0.1 MI S OF DULANEY VALLE, Baltimore, MD

Built 1959 Load: 24.5 t ADT: 643

MD 263

Fair

Over: PLUM POINT CREEK

0.16 MI E OF TOBACCO RD, Calvert, MD

Built 1928 Load: 24.5 t ADT: 692

SILVER RUN VALLEY

Fair

Over: BIG SILVER RUN

0.75 MI E OF MD 97, Carroll, MD

Built 1900 Load: 24.5 t ADT: 480

MD 17

Fair

Over: CSX TRANS., POTOMAC, MUN

ON VIRGINIA LINE, Frederick, MD

Built 1953 Load: 24.5 t ADT: 6,073

FRIENDS CREEK ROAD

Fair

Over: FRIENDS CREEK

1.5 MI NE OF EYLER VALLEY, Frederick, MD

Built 1910 Load: 24.5 t ADT: 123

ROAD

Fair

Over: OWENS CREEK

Take Hwy 77 3 miles west,, Frederick, MD

Built 1970 Load: 24.5 t ADT: 160

MD 132

Fair

Over: AMTRAK

0.19 MILE EAST OF US 40, Harford, MD

Built 1983 Load: 24.5 t ADT: 3,900

MD 20

Fair

Over: RADCLIFF CREEK

0.06 MILE EAST OF MD 514, Kent, MD

Built 1950 Load: 24.5 t ADT: 6,850

MD 290

Fair

Over: RED LION BRANCH

0.21 MILE SOUTH OF US 301, Queen Anne's, MD

Built 1900 Load: 24.5 t ADT: 2,182

MD 367

Fair

Over: BISHOPVILLE PRONG

0.05 MILE WEST OF MD 368, Worcester, MD

Built 1936 Load: 24.5 t ADT: 5,245

MD 611

Fair

Over: SINEPUXENT BAY

0.17 M S OF SOUTH PT RD, Worcester, MD

Built 1964 Load: 24.5 t ADT: 5,302

FALLS ROAD

Fair

Over: CHARLES RUN

0.1 MI S MONKTON RD, Baltimore, MD

Built 1988 Load: 24.9 t ADT: 1,200

BLUE MOUNT ROAD

Fair

Over: GUNPOWDER FALLS

1.3 MI E OF MONKTON RD, Baltimore, MD

Built 1989 Load: 24.9 t ADT: 360

HUNTER MILL ROAD

Fair

Over: FIRST MINE BRANCH

0.4 MI NE OF BACON RD, Baltimore, MD

Built 1988 Load: 24.9 t ADT: 392

COCKEYSVILLE ROAD

Fair

Over: PARKS RUN

0.17 MI W OF MD 45, Baltimore, MD

Built 1949 Load: 24.9 t ADT: 3,390

TENBURY ROAD

Fair

Over: LONG QUARTER BRANCH

100 FEET W OF MEADOWVALE, Baltimore, MD

Built 1955 Load: 24.9 t ADT: 553

RIDGEFIELD ROAD

Fair

Over: LONG QUARTER BRANCH

0.30 MI E OF MD 45, Baltimore, MD

Built 1955 Load: 24.9 t ADT: 715

CAVES ROAD

Fair

Over: NORTH BRANCH JONES FALLS

0.12 MI SW OF MD 129, Baltimore, MD

Built 1910 Load: 24.9 t ADT: 3,208

MD 578

Fair

Over: HOG CREEK

2.06 MILE EAST OF MD 331, Caroline, MD

Built 1941 Load: 24.9 t ADT: 2,672

MD 316

Fair

Over: BR OF BIG ELK CREEK

0.24 MILE NORTH OF MD 279, Cecil, MD

Built 1931 Load: 24.9 t ADT: 4,331

MD RT 213

Fair

Over: C&D CANAL

14 MI WEST OF REEDY PT., Cecil, MD

Built 1948 Load: 24.9 t ADT: 13,615

DRAWBRIDGE ROAD

Fair

Over: CHICAMACOMICO RIVER

0.22 MI. N. OF GRIF NCK R, Dorchester, MD

Built 1972 Load: 24.9 t ADT: 197

MD 550

Fair

Over: DORCUS BRANCH

0.74 MILE SOUTH OF MD 194, Frederick, MD

Built 1925 Load: 24.9 t ADT: 3,541

US 340

Fair

Over: CATOCTIN CREEK

0.63 MILE EAST OF MD 180, Frederick, MD

Built 1961 Load: 24.9 t ADT: 28,982

OAK FARM ROAD

Fair

Over: MILL BROOK

0.4 MIL E OF GLENVILLE RD, Harford, MD

Built 1988 Load: 24.9 t ADT: 102

VOLLMERHAUSEN ROAD

Fair

Over: LITTLE PATUXENT RIVER

0.2 MI W OF GUILFORD RD, Howard, MD

Built 1940 Load: 24.9 t ADT: 3,290

EAST DEER PARK DRI

Fair

Over: CSXT RAILROAD

0.6 MILES EAST OF MD 355, Montgomery, MD

Built 1945 Load: 24.9 t ADT: 7,121

MD 18B

Fair

Over: KENT ISLAND NARROWS

0.59 MILE WEST OF MD 835, Queen Anne's, MD

Built 1951 Load: 24.9 t ADT: 2,123

WARREN ROAD

Fair

Over: CAMPBELL DITCH

0.75 MI E SIXTY FOOT RD, Wicomico, MD

Built 1939 Load: 24.9 t ADT: 114

MD 636

Fair

Over: WARRIOR RUN

0.27 MI E OF MD 53, Allegany, MD

Built 1936 Load: 25.4 t ADT: 8,071

MD 658

Fair

Over: BRADDOCK RUN

0.11 MI N OF US 48, Allegany, MD

Built 1968 Load: 25.4 t ADT: 11,250

WISE AVENUE

Fair

Over: BEAR CREEK

0.9 MI W OF NORTH PT RD, Baltimore, MD

Built 1948 Load: 25.4 t ADT: 14,960

DUTTON AVENUE AND

Fair

Over: TRIBUTARY TO PATAPSCO RI

200' S. OF EDMONDSON AVE., Baltimore, MD

Built 1979 Load: 25.4 t ADT: 6,048

I-83 SB

Fair

Over: GAY STREET

0.2 MI S OF ORLEANS ST, Baltimore city, MD

Built 1975 Load: 25.4 t ADT: 80,130

MD 315

Fair

Over: MARSHYHOPE CREEK

1.11 MILE EAST OF MD 313, Caroline, MD

Built 1910 Load: 25.4 t ADT: 5,080

MD 86

Fair

Over: BR OF GUNPOWDER FALLS

1.74 MI S OF PA LINE, Carroll, MD

Built 1972 Load: 25.4 t ADT: 3,442

Showing 1,351-1,400 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.