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%.

Condition Distribution

Bridge inventory deck-condition mix — Maryland (FHWA NBI)

Maryland25.909173149990956%49.140582594535914%GoodFairPoorStructurally Deficient
Bridge inventory deck-condition mix — Maryland (FHWA NBI)

Counties (24)

Allegany 245 Anne Arundel 395 Baltimore 787 Baltimore city 380 Calvert 33 Caroline 70 Carroll 205 Cecil 194 Charles 94 Dorchester 47 Frederick 491 Garrett 139 Harford 275 Howard 310 Kent 44 Montgomery 522 Prince George's 582 Queen Anne's 88 Somerset 46 St. Mary's 50 Talbot 42 Washington 301 Wicomico 100 Worcester 82

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.

OLD SELBYSPORT RD

Poor

Over: BEAR CREEK

0.01 MI N OF WALNUT ST, Garrett, MD

Built 1920 Load: 2.7 t ADT: 30

ZION ROAD

Poor

Over: HAWLINGS RIVER

2.8 MILES NORTH OF MD 108, Montgomery, MD

Built 1930 Load: 4.5 t ADT: 2,440

ROXBURY ROAD

Poor

Over: BEAVER CREEK

0.1 MI W OF ALT US RTE 40, Washington, MD

Built 1920 Load: 7.3 t ADT: 533

TUFTON AVENUE

Poor

Over: WATERSPOUT RUN

2.63 MI. WEST MD 25, Baltimore, MD

Built 1920 Load: 7.7 t ADT: 7,735

MOHRS LANE

Structurally Deficient

Over: CSX RAILROAD

0.1 MI NW OF US RTE 40, Baltimore, MD

Built 1912 Load: 9.1 t ADT: 1,600

OLD MONTGOMERY RD

Structurally Deficient

Over: LITTLE PATUXENT RIVER

0.5 MI W OF US RTE 29, Howard, MD

Built 1935 Load: 10.0 t ADT: 10

All Bridges in Maryland

MD 17

Good

Over: CATOCTIN CREEK

0.15 MILE SOUTH OF US 40, Frederick, MD

Built 1989 Load: 32.7 t ADT: 7,835

MD 76

Good

Over: MOTTERS RUN

.49 M S OF FOUR POINTS RD, Frederick, MD

Built 2012 Load: 32.7 t ADT: 903

BALLENGER CREEK PI

Good

Over: PIKE BRANCH

0.27 MI S OF CRESTWOOD BD, Frederick, MD

Built 2003 Load: 32.7 t ADT: 14,501

CARRIAGE HILL DRIV

Good

Over: TRIBUTARY OF PETER PAN R

0.8 Mi N of Fingerboard R, Frederick, MD

Built 2004 Load: 32.7 t ADT: 580

BILL MOXLEY ROAD

Good

Over: BUSH CREEK

AT MD 144 INTERSECTION, Frederick, MD

Built 1973 Load: 32.7 t ADT: 2,017

MD 623

Good

Over: PEDDLER RUN

2.03 MILES N OF US 1, Harford, MD

Built 1987 Load: 32.7 t ADT: 1,501

MD 462

Good

Over: SWAN CREEK

0.27 MILE SOUTH OF IS 95, Harford, MD

Built 1978 Load: 32.7 t ADT: 6,501

MD 7

Good

Over: HAHA BRANCH

0.74 MILE NORTH OF MD 24, Harford, MD

Built 1976 Load: 32.7 t ADT: 13,781

MD 623

Good

Over: BR OF SUSQUEHANNA RIV

0.47 MILE NORTH OF MD 161, Harford, MD

Built 1993 Load: 32.7 t ADT: 1,620

LITTLE ROAD

Good

Over: DEEP RUN

0.6 MILES N OF DEEP RUN R, Harford, MD

Built 1980 Load: 32.7 t ADT: 31

I-95

Good

Over: SWAN CREEK

Milepost M86.0, Harford, MD

Built 1963 Load: 32.7 t ADT: 100,386

ROVER MILL ROAD

Good

Over: MIDDLE PATUXENT RIVER

0.6 Mile E of McEndree Rd, Howard, MD

Built 1970 Load: 32.7 t ADT: 100

TOLL HOUSE ROAD

Good

Over: HUDSON BRANCH

30 FT S OF FREDERICK RD, Howard, MD

Built 1967 Load: 32.7 t ADT: 200

SWIMMER ROW WAY

Good

Over: TRIB MIDDLE PATUXENT R

200 ft East of S Trotter, Howard, MD

Built 2000 Load: 32.7 t ADT: 50

HESPERUS DRIVE

Good

Over: TRIB TO WILDE LAKE

1/4 MI SOUTH OF MD 108, Howard, MD

Built 1972 Load: 32.7 t ADT: 50

ELLICOTT WOODS LN

Good

Over: TRIB TO BONNIE BR

At Worthington Way, Howard, MD

Built 1990 Load: 32.7 t ADT: 50

THUNDER HILL ROAD

Good

Over: UNNAMED STREAM

1/8 MI S of MD 108, Howard, MD

Built 1972 Load: 32.7 t ADT: 200

OLD STOCKBRIDGE DR

Good

Over: DEEP RUN

1/8 MI W of MD 103, Howard, MD

Built 1972 Load: 32.7 t ADT: 300

MD 28

Good

Over: BR OF WATTS BRANCH

0.53 MILE WEST OF IS 270, Montgomery, MD

Built 1988 Load: 32.7 t ADT: 47,601

MD 190

Good

Over: LITTLE FALLS

0.44 MI W OF WASH DC, Montgomery, MD

Built 1962 Load: 32.7 t ADT: 22,152

IS 495

Good

Over: SLIGO CREEK TRAIL

0.507 M E OF BR NO 15130, Montgomery, MD

Built 2002 Load: 32.7 t ADT: 232,010

POTOMAC CREST DRIV

Good

Over: SNAKEDEN BRANCH

1 MILE WEST OF I-270, Montgomery, MD

Built 1995 Load: 32.7 t ADT: 513

MD 197

Good

Over: HORSEPEN BRANCH

.25 M N OF RUSTIC HILL DR, Prince George's, MD

Built 1989 Load: 32.7 t ADT: 26,322

MD 210 & MD 210B

Good

Over: CAREY BRANCH

1.88 MILES S OF MD 414, Prince George's, MD

Built 1945 Load: 32.7 t ADT: 65,100

MD 214

Good

Over: COLLINGTON BRANCH

0.44 MILE EAST OF MD 978C, Prince George's, MD

Built 1958 Load: 32.7 t ADT: 22,881

MD 214

Good

Over: NORTHEAST BRANCH

0.08 MILE WEST OF MD 193, Prince George's, MD

Built 1990 Load: 32.7 t ADT: 48,951

MD 382

Good

Over: BLACK SWAMP CREEK

1.33 MILES N OF MD 381, Prince George's, MD

Built 1987 Load: 32.7 t ADT: 1,630

MD 4 EB

Good

Over: WESTERN BRANCH

0.18 MILE WEST OF MD 717, Prince George's, MD

Built 1959 Load: 32.7 t ADT: 46,652

MD 4 WB

Good

Over: WESTERN BRANCH

0.18 MILE NORTH OF MD 717, Prince George's, MD

Built 1959 Load: 32.7 t ADT: 46,652

MD 201

Good

Over: BR OF INDIAN CREEK

0.76 MILE NORTH OF MD 193, Prince George's, MD

Built 1963 Load: 32.7 t ADT: 33,580

MD 214

Good

Over: BR OF SOUTHWEST BR

0.242 MILE WEST OF IS 95, Prince George's, MD

Built 1964 Load: 32.7 t ADT: 53,991

MD 197

Good

Over: CROW BRANCH

0.99 MILE SOUTH OF MD 198, Prince George's, MD

Built 1969 Load: 32.7 t ADT: 30,022

MD 564

Good

Over: BALD HILL BRANCH

0.7 MILE EAST OF MD 450, Prince George's, MD

Built 1973 Load: 32.7 t ADT: 18,290

MD 212

Good

Over: CIDER BARREL RUN

0.17 MILE SOUTH OF IS 95, Prince George's, MD

Built 1971 Load: 32.7 t ADT: 29,301

MD 210 & RAMP 1

Good

Over: CAREY BRANCH

1.09 M N OF LIVINGSTON RD, Prince George's, MD

Built 1945 Load: 32.7 t ADT: 32,915

MD 214

Good

Over: CABIN BRANCH

0.37 MILE EAST OF MD 332, Prince George's, MD

Built 1979 Load: 32.7 t ADT: 53,991

MD 450

Good

Over: LOTTSFORD BRANCH

0.19 M E OF ATWELL AVE, Prince George's, MD

Built 1999 Load: 32.7 t ADT: 27,830

SEAN TAYLOR ROAD

Good

Over: TRIB TO CATTAIL BRANCH

1.0 M WEST OF I-495, Prince George's, MD

Built 1994 Load: 32.7 t ADT: 10,041

FORBES BOULEVARD

Good

Over: TRIB TO FOLLY BRANCH

0.5 M NORTH OF MD 450, Prince George's, MD

Built 1999 Load: 32.7 t ADT: 4,585

McCORMICK DRIVE

Good

Over: UNNAMED STREAM

0.5 MI SOUTH OF MD 202, Prince George's, MD

Built 1982 Load: 32.7 t ADT: 9,830

SUMMERSWEET DRIVE

Good

Over: TRIB TO PISCATAWAY CREEK

.2 MI W OF BRANDYWINE RD, Prince George's, MD

Built 2006 Load: 32.7 t ADT: 550

WHITE HOUSE ROAD

Good

Over: TRIB TO THERESA CREEK

0.92 MI E OF I-95, Prince George's, MD

Built 1996 Load: 32.7 t ADT: 22,859

PERIMETER PATROL R

Good

Over: PAINT BRANCH

800 FT SW OF FLORAL DRIVE, Prince George's, MD

Built 1969 Load: 32.7 t ADT: 5

US 13 SB

Good

Over: BACK CREEK

0.19 MILE SOUTH OF MD 413, Somerset, MD

Built 1964 Load: 32.7 t ADT: 13,630

ALLEN ROAD

Good

Over: SOMERSET CREEK

1.2 MILES NW OF US 13, Somerset, MD

Built 2002 Load: 32.7 t ADT: 609

MD 234

Good

Over: BUDDS CREEK

ON CHARLES CO LINE, St. Mary's, MD

Built 1960 Load: 32.7 t ADT: 6,221

MD 242

Good

Over: DYNARD RUN

0.86 MILE SOUTH OF MD 234, St. Mary's, MD

Built 1960 Load: 32.7 t ADT: 5,491

MD 471

Good

Over: ST. MARY'S RIVER

1.01 MILES NORTH OF MD 5, St. Mary's, MD

Built 1990 Load: 32.7 t ADT: 4,242

MD 144WB

Good

Over: LITTLE TONOLOWAY CREEK

0.4 MILE EAST OF IS 68, Washington, MD

Built 1965 Load: 32.7 t ADT: 972

HOPEWELL ROAD

Good

Over: BR OF CONOCOCHEAGUE CREE

NW OF IS 81/US 11, Washington, MD

Built 1965 Load: 32.7 t ADT: 2,454

Showing 4,001-4,050 of 5,527 bridges

Related

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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.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.