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 136

Fair

Over: BROAD CREEK

1.35 MILES S OF MD 646, Harford, MD

Built 1961 Load: 62.1 t ADT: 7,511

ATHOL AVENUE

Fair

Over: UNNAMED STREAM

0.3 MI E OF LOUDON AVE, Howard, MD

Built 1945 Load: 62.1 t ADT: 680

TACKBROOKE DRIVE

Fair

Over: ROCK CREEK NORTH BRANCH

N OF BOWIE MILL ROAD, Montgomery, MD

Built 2002 Load: 62.1 t ADT: 67

IS 95 OL

Fair

Over: SOUTHWEST BRANCH

0.25 MILE SOUTH OF MD 214, Prince George's, MD

Built 1964 Load: 62.1 t ADT: 102,413

MUIRKIRK ROAD

Fair

Over: MUIRKIRK BR OF INDIAN CR

0.04 MI W OF US 1, Prince George's, MD

Built 1969 Load: 62.1 t ADT: 22,647

YELLOWWOOD LANE

Fair

Over: BALD HILL BRANCH

0.2 M W OF LOTTSFORD RD, Prince George's, MD

Built 2000 Load: 62.1 t ADT: 4,503

US 13 NB

Fair

Over: NORFOLK SOUTHERN RR

0.40 MILE NORTH OF MD 364, Somerset, MD

Built 1957 Load: 62.1 t ADT: 16,470

MD 460

Fair

Over: LITTLE ANNEMESSEX RIVER

0.52 MILE WEST OF MD 413, Somerset, MD

Built 1966 Load: 62.1 t ADT: 4,071

MONEY MAKE ROAD

Fair

Over: BOLINGBROKE CREEK

2 MI SE OF TRAPPE, Talbot, MD

Built 2006 Load: 62.1 t ADT: 164

MD 36

Fair

Over: BRADDOCK RUN

0.03 MI S OF US 40L, Allegany, MD

Built 1957 Load: 62.6 t ADT: 10,713

GREEN SPRING ROAD

Fair

Over: C&O CANAL

0.4 miles from MD Route 5, Allegany, MD

Built 1971 Load: 62.6 t ADT: 100

SEVERN AVENUE

Fair

Over: AMTRAK RAILROAD

0.06 MI E OF IS 695, Baltimore, MD

Built 1979 Load: 62.6 t ADT: 1,575

OWINGS MILLS BOULE

Fair

Over: GWYNNS FALLS

1 MI N OF REISTERSTOWN RD, Baltimore, MD

Built 1989 Load: 62.6 t ADT: 29,343

MD 404 BUSINESS

Fair

Over: CHOPTANK RIVER

0.12 M W OFMARKET ST, Caroline, MD

Built 1980 Load: 62.6 t ADT: 2,970

I-95

Fair

Over: STREAM

Milepost M98.6, Cecil, MD

Built 1963 Load: 62.6 t ADT: 89,058

TRAPPE CHURCH ROAD

Fair

Over: HOPKINS BRANCH

1.0 MILES E OF MD 136, Harford, MD

Built 1978 Load: 62.6 t ADT: 441

WEST OLD BALTIMORE

Fair

Over: LITTLE SENECA CREEK

1.0 MILES WEST OF MD 355, Montgomery, MD

Built 1934 Load: 62.6 t ADT: 1,069

BRANCHVILLE ROAD

Fair

Over: INDIAN CREEK

0.16 MI NW OF MD 193, Prince George's, MD

Built 1969 Load: 62.6 t ADT: 1,856

BW PARKWAY

Fair

Over: MD ROUTE 202

0.8 MILES NORTH OF MD ROU, Prince George's, MD

Built 1953 Load: 62.6 t ADT: 80,000

SUITLAND PARKWAY

Fair

Over: ANDREWS AFB ACCESS ROAD

0.1 MILES WEST OF MD ROUT, Prince George's, MD

Built 1944 Load: 62.6 t ADT: 16,750

PEGG ROAD

Fair

Over: BRANCH JARBOESVILLE RUN

0.9 MI SOUTHWEST RT.235, St. Mary's, MD

Built 1995 Load: 62.6 t ADT: 4,891

IS 795 RAMP 'B'

Fair

Over: GWYNNS FALLS

@ IS 795 & IS 695, Baltimore, MD

Built 1984 Load: 63.0 t ADT: 23,650

ON-RAMP NORTHERN P

Fair

Over: JONES FALLS

NORTHRN PKWY RAMP TO I-83, Baltimore city, MD

Built 1959 Load: 63.0 t ADT: 29,900

THURSTON ROAD

Fair

Over: BENNETT CREEK

0.75 MI S OF PETERS RD, Frederick, MD

Built 1964 Load: 63.0 t ADT: 1,632

FOXVLLE DEERFIELD

Fair

Over: OWENS CREEK

0.25 MI NW OF MD 550, Frederick, MD

Built 1978 Load: 63.0 t ADT: 561

WHITE HOUSE ROAD

Fair

Over: SOUTHWEST BRANCH

0.04 MI S OF MD 202, Prince George's, MD

Built 1967 Load: 63.0 t ADT: 13,443

IS 795 SBR

Fair

Over: CSX TRANSPORTATION

0.71 MILE NORTH OF IS 695, Baltimore, MD

Built 1983 Load: 63.5 t ADT: 110,982

COWPENS AVENUE

Fair

Over: MINEBANK RUN

0.11 M N OF CROMWEL BR RD, Baltimore, MD

Built 1968 Load: 63.5 t ADT: 7,165

IS 95 NB

Fair

Over: CSX RR, BERNARD DR

Milepost M51.0, Baltimore city, MD

Built 1976 Load: 63.5 t ADT: 111,060

US 15 NBR

Fair

Over: LITTLE OWENS CREEK

1.74 MILE NORTH OF MD 550, Frederick, MD

Built 1982 Load: 63.5 t ADT: 27,210

S. CARROLL STREET

Fair

Over: CARROLL CREEK

470' SOUTH OF SR 144, Frederick, MD

Built 1991 Load: 63.5 t ADT: 10,130

GRAFTON SHOP ROAD

Fair

Over: BEAR CABIN BRANCH

0.03 MI N OF TIMBERLEA DR, Harford, MD

Built 1977 Load: 63.5 t ADT: 2,765

LAKESIDE DRIVE

Fair

Over: TRIB. TO PATUXENT RIVER

0.2 MI W OF NICHOLS DRIV, Howard, MD

Built 1988 Load: 63.5 t ADT: 340

MD 109

Fair

Over: LITTLE BENNETT CREEK

UNDER IS 270 OVERPASS, Montgomery, MD

Built 1951 Load: 63.5 t ADT: 7,232

GOSHEN ROAD

Fair

Over: WHETSTONE RUN TRIBUTARY

.25 MI N OF MIDCOUNTY HWY, Montgomery, MD

Built 1930 Load: 63.5 t ADT: 26,801

HOPE ROE ROAD

Fair

Over: GERMAN BRANCH

0.1 MI. SW OF MOORES LN, Queen Anne's, MD

Built 1983 Load: 63.5 t ADT: 350

MD 363

Fair

Over: UPPER THOROFARE

0.36 MILE E OF HOTEL RD, Somerset, MD

Built 1987 Load: 63.5 t ADT: 1,322

MD 144WB

Fair

Over: LITTLE TONOLOWAY CREEK

0.01 MILE WEST OF US 522, Washington, MD

Built 1925 Load: 63.5 t ADT: 4,051

CHESAPEAKE CENTER

Fair

Over: BACK CREEK

0.1 MI. S. OF MD 710, Anne Arundel, MD

Built 1991 Load: 63.9 t ADT: 10,047

I-83 NB OFF-RAMP

Fair

Over: 28TH ST AND NS RAILROAD

0.4 MI N OF NORTH AVE, Baltimore city, MD

Built 1959 Load: 63.9 t ADT: 31,200

OLDFIELD POINT RD

Fair

Over: PLUM CREEK

2.5 + S OF ELKTON, Cecil, MD

Built 1986 Load: 63.9 t ADT: 9,301

OLD TELEGRAPH RD

Fair

Over: SANDY BRANCH

0.35 MI S OF BUNKER HI RD, Cecil, MD

Built 2000 Load: 63.9 t ADT: 948

MADONNA ROAD

Fair

Over: LITTLE DEER CREEK

0.3 MILE S OF MT HOREB RD, Harford, MD

Built 1992 Load: 63.9 t ADT: 789

WILDCAT ROAD

Fair

Over: WILDCAT BRANCH

2.4 MI SW OF MD 124, Montgomery, MD

Built 1935 Load: 63.9 t ADT: 431

MD 213

Fair

Over: GRAVEL RUN

0.22 MILE SOUTH OF MD 305, Queen Anne's, MD

Built 1932 Load: 64.2 t ADT: 11,625

OAKLAWN AVENUE

Fair

Over: BRADDOCK RUN

0.20 MI NE OF US 40 ALT, Allegany, MD

Built 1900 Load: 64.4 t ADT: 135

IS 695 RAMP 'A'

Fair

Over: HERBERT RUN

RP 3 TO LEEDS AVE, Baltimore, MD

Built 1957 Load: 64.4 t ADT: 4,779

SINCLAIR LANE

Fair

Over: HERRING RUN

1 MI E ERDMAN AVE, Baltimore city, MD

Built 1958 Load: 64.4 t ADT: 37,800

MARRIOTTSVILLE RD

Fair

Over: PINEY RUN

0.13 MI N HOWARD CO LINE, Carroll, MD

Built 1977 Load: 64.4 t ADT: 12,255

SAVAGE RIVER ROAD

Fair

Over: SAVAGE RIVER

2.1 MI E SPRING LICK RD, Garrett, MD

Built 1976 Load: 64.4 t ADT: 260

Showing 3,251-3,300 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.