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 132B

Fair

Over: AMTRAK

0.03 MILE SOUTH OF US 40, Harford, MD

Built 1943 Load: 33.6 t ADT: 3,563

BETHESDA CHURCH RO

Fair

Over: BENNETT CREEK

2.6 MILES SE OF MD 75, Montgomery, MD

Built 1990 Load: 33.6 t ADT: 4,242

MAPLE AVENUE

Fair

Over: SLIGO CREEK

0.5 MI N OF JCT SR 410, Montgomery, MD

Built 1930 Load: 33.6 t ADT: 6,024

MD 201

Fair

Over: CSX TRANS.

0.12 MILE NORTH OF MD 459, Prince George's, MD

Built 1953 Load: 33.6 t ADT: 32,080

GOOD LUCK ROAD

Fair

Over: BALD HILL BRANCH

0.09 MI E CIPRIANO RD, Prince George's, MD

Built 1963 Load: 33.6 t ADT: 13,471

SELLMAN ROAD

Fair

Over: LITTLE PAINT BRANCH

.5 MI W OF US RTE 1, Prince George's, MD

Built 1985 Load: 33.6 t ADT: 7,293

CHERRY LANE (EAST)

Fair

Over: CSX RAILROAD

0.66 MI W OF MD 197, Prince George's, MD

Built 1990 Load: 33.6 t ADT: 10,861

CHERRY LANE (WEST)

Fair

Over: CSX RAILROAD

0.66 MILES WEST OF MD 197, Prince George's, MD

Built 1979 Load: 33.6 t ADT: 10,860

MD 313

Fair

Over: UNICORN BRANCH

0.92 MILE NORTH OF MD 544, Queen Anne's, MD

Built 1924 Load: 33.6 t ADT: 1,970

MD 5

Fair

Over: ST MARYS RIVER

0.10 MILE NORTH OF MD 246, St. Mary's, MD

Built 1955 Load: 33.6 t ADT: 22,642

IS 81

Fair

Over: BR OF CONOCOCHEAGUE CREE

0.09 MILE NORTH OF US 11, Washington, MD

Built 1965 Load: 33.6 t ADT: 61,350

MD 346

Fair

Over: BURNT MILL BRANCH

0.73 MI W OF WORCESTER CO, Wicomico, MD

Built 1919 Load: 33.6 t ADT: 2,382

CAMDEN AVENUE

Fair

Over: TONY TANK LAKE

0.2 MI S OF KAY AVE, Wicomico, MD

Built 1955 Load: 33.6 t ADT: 8,796

KENSINGTON PARKWAY

Fair

Over: ROCK CREEK

0.2 MI S OF BEACH DRIVE, Montgomery, MD

Built 1910 Load: 33.7 t ADT: 3,633

IS 68

Fair

Over: WILLS CREEK, CSX RR, MUN

3 MI. SW. OF US 220, Allegany, MD

Built 1968 Load: 34.0 t ADT: 53,950

MD 3 BU

Fair

Over: SAWMILL CREEK

0.06 MILE NORTH OF MD 270, Anne Arundel, MD

Built 1980 Load: 34.0 t ADT: 17,610

MANTUA MILL ROAD

Fair

Over: WESTERN RUN

0.07 MI E OF MD 128, Baltimore, MD

Built 1986 Load: 34.0 t ADT: 450

OREMS ROAD

Fair

Over: MIDDLE RIVER

0.3 MI S. OF MARTIN BLVD., Baltimore, MD

Built 1980 Load: 34.0 t ADT: 5,165

DANVILLE ROAD, DAL

Fair

Over: TRIBUTARY TO REDHOUSE CR

1.0MI SW US1 AND I-695, Baltimore, MD

Built 1948 Load: 34.0 t ADT: 12,981

IS 95 RAMP A

Fair

Over: CSX

MILEPOST 60.0, Baltimore city, MD

Built 1973 Load: 34.0 t ADT: 6,464

MD 404

Fair

Over: CHOPTANK RIVER

0.29 MILE EAST OF MD 328, Caroline, MD

Built 1983 Load: 34.0 t ADT: 20,471

MD 852

Fair

Over: LITTLE PIPE CREEK

0.04 M W OF ADAMS MILL RD, Carroll, MD

Built 1900 Load: 34.0 t ADT: 400

BARTHOLOW ROAD

Fair

Over: LITTLE MORGAN RUN

1.73 MILES N OF MD 32, Carroll, MD

Built 1968 Load: 34.0 t ADT: 4,061

MD 7D

Fair

Over: BIG ELK CREEK

0.12 MILE EAST OF MD 281, Cecil, MD

Built 1932 Load: 34.0 t ADT: 7,988

MD 85

Fair

Over: ROCKY FOUNTAIN RUN

0.03 MILE NORTH OF MD 880, Frederick, MD

Built 1929 Load: 34.0 t ADT: 6,713

IS 270

Fair

Over: CSX TRANSPORTATION

1.0 MILE SOUTH OF MD 85, Frederick, MD

Built 1950 Load: 34.0 t ADT: 80,340

FALLING BRANCH RD

Fair

Over: FALLING BRANCH

0.7 MI NE OF RED BRIDGE R, Harford, MD

Built 1973 Load: 34.0 t ADT: 25

MD 28

Fair

Over: LITTLE MONOCACY RIVER

1.86 MILES E OF FRED CO, Montgomery, MD

Built 1925 Load: 34.0 t ADT: 5,050

MD 4 WB

Fair

Over: RACE TRACK RD

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

Built 1960 Load: 34.0 t ADT: 46,652

ROBLEE DRIVE

Fair

Over: BACK BRANCH

1.0 MILE NORTH OF MD 4, Prince George's, MD

Built 1968 Load: 34.0 t ADT: 3,200

MD 300

Fair

Over: RED LION BRANCH

0.09 MILE WEST OF MD 290, Queen Anne's, MD

Built 1920 Load: 34.0 t ADT: 2,391

US 13 NB

Fair

Over: MANOKIN RIVER

0.05 MILE NORTH OF MD 363, Somerset, MD

Built 1958 Load: 34.0 t ADT: 22,370

PECTONVILLE ROAD

Fair

Over: LICKING CREEK

1.25 MI N OF US RTE 40, Washington, MD

Built 1982 Load: 34.0 t ADT: 475

IS 695 RAMP 'G'

Fair

Over: MTA LIGHT RAIL

0.04 MI N OF MD 170, Anne Arundel, MD

Built 1967 Load: 34.5 t ADT: 2,874

EMPLOYEE PARKING L

Fair

Over: LEVEL 3 EXIT RAMP FROM H

BWI EMPLOYEE PARK LOT, Anne Arundel, MD

Built 1991 Load: 34.5 t ADT: 221

MD 30

Fair

Over: MARYLAND MIDLAND RR

0.62 MILE NORTH OF MD 795, Baltimore, MD

Built 1936 Load: 34.5 t ADT: 18,070

IS 695 & RAMPS '4

Fair

Over: DEAD RUN

0.19 M N OF CROSBY ROAD, Baltimore, MD

Built 1961 Load: 34.5 t ADT: 188,860

WOODLAWN DRIVE

Fair

Over: DEAD RUN

0.87 MI N OF IS 70, Baltimore, MD

Built 1960 Load: 34.5 t ADT: 18,500

TOM DAY BOULEVARD

Fair

Over: EAST BRANCH HERBERT RUN

0.02 MI W OF US 1, Baltimore, MD

Built 1960 Load: 34.5 t ADT: 3,484

NORTHERN PKWY RAMP

Fair

Over: I-83

WB RAMP FROM N PKWY, Baltimore city, MD

Built 1959 Load: 34.5 t ADT: 5,350

PENNINGTON AVENUE

Fair

Over: CABIN BRANCH

1.5 MI S PATAPSCO AVE, Baltimore city, MD

Built 1986 Load: 34.5 t ADT: 13,500

TRACEYS MILL ROAD

Fair

Over: SOUTH BR GUNPOWDER FALLS

0.44 MI, Carroll, MD

Built 1978 Load: 34.5 t ADT: 1,104

MD 222

Fair

Over: CSX TRANS.

0.32 MILE NORTH OF US 40, Cecil, MD

Built 1990 Load: 34.5 t ADT: 13,680

MD 75

Fair

Over: FAHRNEY BRANCH

0.43 MILE SOUTH OF MD 80, Frederick, MD

Built 1933 Load: 34.5 t ADT: 7,952

ROCK RUN ROAD

Fair

Over: ROCK RUN

0.01 MI E OF WILKINSON RD, Harford, MD

Built 1955 Load: 34.5 t ADT: 154

MD 410

Fair

Over: CSXT, WMATA

0.09 MILE EAST OF US 29, Montgomery, MD

Built 1975 Load: 34.5 t ADT: 14,001

MD 5

Fair

Over: GLEBE RUN

0.11 MILE SOUTH OF MD 4, St. Mary's, MD

Built 1955 Load: 34.5 t ADT: 12,500

MD 5

Fair

Over: CHURCH CREEK

2.4 MILES SOUTH OF MD 584, St. Mary's, MD

Built 1936 Load: 34.5 t ADT: 4,400

ROCK HILL ROAD

Fair

Over: UNNAMED STREAM

0.22 MI SW OF IS 70+MD 63, Washington, MD

Built 1920 Load: 34.5 t ADT: 778

MD 90

Fair

Over: NORFOLK SOUTHERN RR

2.19 MILES EAST OF MD 346, Worcester, MD

Built 1976 Load: 34.5 t ADT: 8,118

Showing 2,001-2,050 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.