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

WORMANS MILL COURT

Good

Over: TRIBUTARY NO. 10

700 FEET NW OF MD 355, Frederick, MD

Built 1986 Load: 99.9 t ADT: 1,615

MONOCACY BOULEVARD

Good

Over: PARK BRANCH

2.0 MI EAST OF MD 355, Frederick, MD

Built 2018 Load: 99.9 t ADT: 11,825

MD 24

Good

Over: BR OF DEER CREEK

0.29 M S OF COEN ROAD, Harford, MD

Built 1986 Load: 99.9 t ADT: 3,193

MD 24 & 24E

Good

Over: HEAVENLY WATERS

0.19 MI S OF US 1, Harford, MD

Built 1987 Load: 99.9 t ADT: 23,140

MD 24

Good

Over: PED. AND HORSE TUNNEL

0.45 MILE NORTH OF US 1BU, Harford, MD

Built 1987 Load: 99.9 t ADT: 21,480

JAMES RUN ROAD

Good

Over: BROAD RUN

0.3 MILES E OF MD 136, Harford, MD

Built 1960 Load: 99.9 t ADT: 1,265

JOPPA FARM ROAD

Good

Over: FOSTER BRANCH

1.9 MILES E OF US 40, Harford, MD

Built 1997 Load: 99.9 t ADT: 15,650

WAGNER WAY

Good

Over: BYNUM RUN

0.2 MILES E OF MD 24, Harford, MD

Built 2001 Load: 99.9 t ADT: 732

TOLLGATE ROAD

Good

Over: TRIB / WINTERS RUN

500 FT N OF MONTROSE WAY, Harford, MD

Built 2003 Load: 99.9 t ADT: 736

MONTROSE WAY

Good

Over: TRIB / WINTERS RUN

0.2 MILES W OF TOLLGATE R, Harford, MD

Built 2005 Load: 99.9 t ADT: 58

MONTROSE WAY

Good

Over: TRIB / WINTERS RUN

0.9 MILES W OF TOLLGATE R, Harford, MD

Built 2005 Load: 99.9 t ADT: 58

KALMIA ROAD

Good

Over: TRIB / DEER CREEK

0.61 MILES W OF US RTE. 1, Harford, MD

Built 1970 Load: 99.9 t ADT: 287

WEST MACPHAIL ROAD

Good

Over: PLUMTREE RUN

0.2 MILES SW OF MD 24, Harford, MD

Built 1999 Load: 99.9 t ADT: 1,723

MD 100

Good

Over: TRIB TO RED HILL BRANCH

.25 M E OF LONG GATE PKWY, Howard, MD

Built 1993 Load: 99.9 t ADT: 80,680

MD 100

Good

Over: RED HILL BRANCH

0.6 M E OF LONG GATE PKWY, Howard, MD

Built 1993 Load: 99.9 t ADT: 80,680

MD 100M (COCA COLA

Good

Over: BRANCH OF DEEP RUN

0.06 M N OF AA CO LINE, Howard, MD

Built 1998 Load: 99.9 t ADT: 13,792

HIPSLEY MILL ROAD

Good

Over: CABIN BRANCH

0.4 MI E OF ELLICOTT ROAD, Howard, MD

Built 2003 Load: 99.9 t ADT: 421

CENTENNIAL LANE

Good

Over: BRANCH OF LITTLE PATUXEN

0.3 MI S OF FREDERICK RD, Howard, MD

Built 1992 Load: 99.9 t ADT: 13,080

AMBERWOODS WAY

Good

Over: TRIB S BR PATAPSCO RIVER

2000 FT. WEST OF MD 32, Howard, MD

Built 2000 Load: 99.9 t ADT: 30

RED DAHLIA DRIVE

Good

Over: UNNAMED STREAM

800' S of Old Frederick R, Howard, MD

Built 1995 Load: 99.9 t ADT: 20

BIG BRANCH DRIVE

Good

Over: TRIB TO TRIADELPHIA RES

1/4 MI S OF HOWARD RD, Howard, MD

Built 2000 Load: 99.9 t ADT: 50

ELIOTS OAK ROAD

Good

Over: TRIB TO WILDE LAKE

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

Built 1972 Load: 99.9 t ADT: 100

SUNNY SPRING

Good

Over: TRIB TO LITTLE PATUXENT

500' N of Owen Brown Rd, Howard, MD

Built 1972 Load: 99.9 t ADT: 100

BRAMPTON PARKWAY

Good

Over: UNNAMED STREAM

1000' S of MD 103, Howard, MD

Built 1972 Load: 99.9 t ADT: 150

WETHERED DR

Good

Over: UNNAMED STREAM

500' W OF EXECUTIVE PARK, Howard, MD

Built 2000 Load: 99.9 t ADT: 30

PEBBLE CREEK DRIVE

Good

Over: UNNAMED STREAM

300' W OF DEBORAH JEAN DR, Howard, MD

Built 1998 Load: 99.9 t ADT: 25

TIBER FALLS DRIVE

Good

Over: TIBER BRANCH

500' NW OF OLD COLUMBIA P, Howard, MD

Built 2000 Load: 99.9 t ADT: 50

TOWN SQUARE PARKWA

Good

Over: LITTLE PATUXENT RIVER

1300 FT S OF RESORT RD, Howard, MD

Built 2015 Load: 99.9 t

PERKINS HILL ROAD

Good

Over: MORGAN CREEK

0.3 MI SE OF MD RTE 213, Kent, MD

Built 1975 Load: 99.9 t ADT: 266

MD 28

Good

Over: MUDDY BRANCH

0.03 MILE EAST OF MD 899A, Montgomery, MD

Built 2004 Load: 99.9 t ADT: 24,594

MD 108

Good

Over: TRIB TO JAMES CREEK

1.24 MILES EAST OF MD 97, Montgomery, MD

Built 1994 Load: 99.9 t ADT: 22,100

MD 124

Good

Over: WHETSTONE RUN

1.23 MILE NORTH OF MD 355, Montgomery, MD

Built 1990 Load: 99.9 t ADT: 23,940

IS 270 RAMP L(1)

Good

Over: GUNNERS BRANCH

IS 270/MIDDLEBROOK INTER, Montgomery, MD

Built 1991 Load: 99.9 t ADT: 6,945

CO 141 (MIDDLEBROO

Good

Over: GUNNERS BRANCH

0.1 MILE WEST OF IS 270, Montgomery, MD

Built 1959 Load: 99.9 t ADT: 16,296

LONGDRAFT ROAD

Good

Over: LONG DRAUGHT BRANCH

0.4 MI N OF GREAT SENECA, Montgomery, MD

Built 1977 Load: 99.9 t ADT: 3,200

REDLAND ROAD

Good

Over: CRABBS CREEK

0.7 MILES EAST OF MD 355, Montgomery, MD

Built 1981 Load: 99.9 t ADT: 25,649

MONTGOMERY VILLAGE

Good

Over: NORTH CREEK

2.8 MI NORTH OF MD 355, Montgomery, MD

Built 1972 Load: 99.9 t ADT: 31,432

SAM EIG HIGHWAY

Good

Over: TRIBUTARY TO MUDDY BRANC

1 MI E OF MUDDY BRANCH RD, Montgomery, MD

Built 1991 Load: 99.9 t ADT: 34,100

RANWORTH DRIVE

Good

Over: TRIBUTARY TO LITTLE SENE

0.5 MI N OF MD RTE 117, Montgomery, MD

Built 1994 Load: 99.9 t ADT: 150

WICKHAM ROAD

Good

Over: ROCK CRK NORTH BRANCH TR

N OF BOWIE MILL ROAD, Montgomery, MD

Built 2002 Load: 99.9 t ADT: 684

WICKHAM ROAD

Good

Over: TRIB. TO ROCK CREEK N. B

N OF BOWIE MILL ROAD, Montgomery, MD

Built 2002 Load: 99.9 t ADT: 376

OLD BALTIMORE ROAD

Good

Over: JAMES CREEK

1.2 MI. N. OF MD 108, Montgomery, MD

Built 1998 Load: 99.9 t ADT: 3,623

FDA BOULEVARD

Good

Over: TRIBUTARY TO PAINT BRANC

.4 MI W OF CHERRY HILL RD, Montgomery, MD

Built 2010 Load: 99.9 t ADT: 2,710

WISCONSIN AVENUE

Good

Over: BETHESDA METRO PED. TUNN

70 FT SOUTH OF MD 410, Montgomery, MD

Built 1984 Load: 99.9 t ADT: 40,769

EDISON PARK DRIVE

Good

Over: TRUCK LOADING DOCKS

0.4 MI NORTH OF MD 28, Montgomery, MD

Built 1968 Load: 99.9 t ADT: 130

SNOWDEN FARM PARKW

Good

Over: LITTLE SENECA CREEK

N. OF FREDERICK ROAD, Montgomery, MD

Built 2011 Load: 99.9 t ADT: 6,303

SNOWDEN FARM PARKW

Good

Over: TRIB TO LITTLE SENECA CR

N. OF FREDERICK ROAD, Montgomery, MD

Built 2011 Load: 99.9 t ADT: 5,795

FOREMAN BOULEVARD

Good

Over: TRIB TO LITTLE SENECA CR

E. OF FREDERICK ROAD, Montgomery, MD

Built 2011 Load: 99.9 t ADT: 3,500

WEST OLD BALTIMORE

Good

Over: CABIN BRANCH

0.5 MI EAST OF MD 121, Montgomery, MD

Built 2016 Load: 99.9 t ADT: 2,221

SERPENTINE WAY

Good

Over: TRIB TO PAINT BRANCH

0.7 MILES WEST OF US-29, Montgomery, MD

Built 1975 Load: 99.9 t ADT: 3,476

Showing 5,201-5,250 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.