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

SUITLAND PARKWAY (

Fair

Over: HENSON CREEK

0.1 MILES EAST OF FORESTV, Prince George's, MD

Built 1996 Load: 37.2 t ADT: 19,550

MD 363

Fair

Over: DAMES QUARTER CREEK

0.01 M E OF MESSICK ROAD, Somerset, MD

Built 1976 Load: 37.2 t ADT: 2,308

FORT FREDERICK ACC

Fair

Over: C&O CANAL

0.3 miles from Fort Frede, Washington, MD

Built 1973 Load: 37.2 t ADT: 50

US 50 EB

Fair

Over: POCOMOKE RIVER

ON WORCESTER CO LINE, Wicomico, MD

Built 1964 Load: 37.2 t ADT: 24,122

US 50 WB

Fair

Over: POCOMOKE RIVER

ON WORCESTER CO LINE, Wicomico, MD

Built 1964 Load: 37.2 t ADT: 24,122

RICHARDSON ROAD

Fair

Over: BURNT MILL BRANCH

0.84 MI N OF MD 346, Wicomico, MD

Built 1974 Load: 37.2 t ADT: 974

MD 450

Fair

Over: BACON RIDGE BRANCH

0.89 MI E OF RUTLAND RD, Anne Arundel, MD

Built 2008 Load: 37.3 t ADT: 7,520

PALMER ROAD SOUTH

Fair

Over: E PALMER RD,STONEY CREEK

500M E OF WOOD RD, Montgomery, MD

Built 1981 Load: 37.3 t ADT: 2,750

US 220

Fair

Over: MILL RUN

.13 MILE NORTH OF MD 830B, Allegany, MD

Built 1950 Load: 37.6 t ADT: 7,111

HAMMONDS FERRY RD

Fair

Over: PATAPSCO RIVER

ON AA CO/ BALTO CO LINE, Anne Arundel, MD

Built 1961 Load: 37.6 t ADT: 8,800

MD 695 IL

Fair

Over: AMTRAK & BACK RIVER

0.75 MILE SOUTH OF MD 150, Baltimore, MD

Built 1968 Load: 37.6 t ADT: 49,829

I-895 NB

Fair

Over: AMTRAK

Milepost M2.0, Baltimore, MD

Built 1957 Load: 37.6 t ADT: 7,507

I 95 SB RAMP S

Fair

Over: TO KEITH AVENUE

EX 56 RAMP TO KEITH AVE, Baltimore city, MD

Built 1982 Load: 37.6 t ADT: 3,726

IS 895

Fair

Over: CANTON RR

MILE POINT 11.9, Baltimore city, MD

Built 1957 Load: 37.6 t ADT: 66,448

I-695 IL

Fair

Over: CSXT

0.18 MI N OF CHEMICAL RD, Baltimore city, MD

Built 1975 Load: 37.6 t ADT: 21,765

MAYBERRY ROAD

Fair

Over: BIG PIPE CREEK

0.06 MI N OF UNGER RD, Carroll, MD

Built 1987 Load: 37.6 t ADT: 762

OTTERDALE MILL ROA

Fair

Over: BIG PIPE CREEK

0.25 MI S OF NASBAUM RD, Carroll, MD

Built 1930 Load: 37.6 t ADT: 1,268

CARROLLTON ROAD

Fair

Over: DEEP RUN

0.02 MI W OF LEES MILL RD, Carroll, MD

Built 1960 Load: 37.6 t ADT: 709

GLEBE RD

Fair

Over: SCOTCHMAN CREEK

0.32 MI NW OF MD 213, Cecil, MD

Built 1985 Load: 37.6 t ADT: 1,465

MD 6

Fair

Over: ZEKIAH SWAMP

0.04 M W OF BR NO 0800500, Charles, MD

Built 1929 Load: 37.6 t ADT: 12,432

MD 135

Fair

Over: CSX TRANS.

0.66 MILE EAST OF MD 495A, Garrett, MD

Built 1930 Load: 37.6 t ADT: 3,198

MD 24

Fair

Over: BR OF DEER CREEK

0.42 M S OF DAVIS ROAD, Harford, MD

Built 1986 Load: 37.6 t ADT: 3,193

RED BRIDGE ROAD

Fair

Over: FALLING BRANCH

0.3 MILES E OF FAWN GR RD, Harford, MD

Built 1975 Load: 37.6 t ADT: 113

PROSPECT ROAD

Fair

Over: DEEP CREEK

1.1 MILES N OF MD 136, Harford, MD

Built 1950 Load: 37.6 t ADT: 575

LEWIS LANE

Fair

Over: AMTRAK RAILROAD

0.1 MILES E OF US 40, Harford, MD

Built 1980 Load: 37.6 t ADT: 5,745

NEEDWOOD ROAD

Fair

Over: ROCK CREEK

.6 MI W OF MUNCASTER MILL, Montgomery, MD

Built 1965 Load: 37.6 t ADT: 6,446

KEMP MILL ROAD

Fair

Over: TRIBUTARY TO NORTHWEST B

200 FT S OF GLENALLAN AVE, Montgomery, MD

Built 1964 Load: 37.6 t ADT: 12,820

MD 223

Fair

Over: PISCATAWAY CREEK

0.1 MILE NORTH OF MD 223A, Prince George's, MD

Built 1974 Load: 37.6 t ADT: 112

US 50

Fair

Over: AMTRAK, WMATA

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

Built 1959 Load: 37.6 t ADT: 108,214

IS 95X NB

Fair

Over: PAINT BRANCH

0.44 M S OF BR NO 1612400, Prince George's, MD

Built 1967 Load: 37.6 t ADT: 1,880

IS 95/IS 495

Fair

Over: POTOMAC RIVER

ON VIRGINIA LINE, Prince George's, MD

Built 2008 Load: 37.6 t ADT: 135,287

CARTER AVENUE

Fair

Over: AMTRAK RAILROAD

0.05 MI SOUTH OF MD 564, Prince George's, MD

Built 1979 Load: 37.6 t ADT: 16,914

RUMBLEY ROAD

Fair

Over: TEAGUE CREEK

1.2 MI EAST OF MD 361, Somerset, MD

Built 1978 Load: 37.6 t ADT: 223

MULLETT BRANCH ROA

Fair

Over: KINGS CREEK

0.5 MI SE OF MD 328, Talbot, MD

Built 1960 Load: 37.6 t ADT: 282

UNGER ROAD

Fair

Over: GROVE CREEK

0.5 MI SW OF LEIT SMITH R, Washington, MD

Built 1830 Load: 37.6 t ADT: 194

US 50 EB

Fair

Over: HERRING CREEK

0.19 MILE WEST OF MD 707A, Worcester, MD

Built 1942 Load: 37.6 t ADT: 21,431

US 50 WB

Fair

Over: HERRING CREEK

0.19 MILE WEST OF MD 707A, Worcester, MD

Built 1942 Load: 37.6 t ADT: 21,431

US 113 NB

Fair

Over: BACHELORS BRANCH

3.1 MILES NORTH OF MD 756, Worcester, MD

Built 1971 Load: 37.6 t ADT: 2,751

MD 36

Fair

Over: NEFF RUN

2.57 MI S OF MD 55, Allegany, MD

Built 1939 Load: 38.1 t ADT: 6,750

TERMINAL ROAD

Fair

Over: SACHS BRANCH

BWI AIRPORT TERMINAL RD, Anne Arundel, MD

Built 2002 Load: 38.1 t ADT: 11,269

MD 158

Fair

Over: MUD FLATS

1.44 MILE WEST OF MD 151, Baltimore, MD

Built 1976 Load: 38.1 t ADT: 12,161

SUSSEX ROAD

Fair

Over: TRIBUTARY TO GWYNNS FALL

0.07 MI N OF MD 26, Baltimore, MD

Built 1969 Load: 38.1 t ADT: 442

CENTRAL AVENUE

Fair

Over: HARFORD RUN

BETWEEN ALICEANNA & FLEET, Baltimore city, MD

Built 1960 Load: 38.1 t ADT: 3,900

NORTHERN PARKWAY

Fair

Over: CHINQUAPIN RUN

0.3 MI W OF THE ALAMEDA, Baltimore city, MD

Built 1974 Load: 38.1 t ADT: 16,640

MD 267

Fair

Over: AMTRAK

0.06 MILE EAST OF MD 7C, Cecil, MD

Built 1967 Load: 38.1 t ADT: 1,680

BASIN RUN ROAD

Fair

Over: BASIN RUN

0.1 MI E OF DR JACK RD, Cecil, MD

Built 1900 Load: 38.1 t ADT: 165

MD 77

Fair

Over: OWENS CREEK

0.02 MI W OF FRUSHOUR RD, Frederick, MD

Built 1932 Load: 38.1 t ADT: 3,131

MD 180

Fair

Over: CATOCTIN CREEK

0.55 MILE EAST OF MD 872, Frederick, MD

Built 1928 Load: 38.1 t ADT: 4,580

MD 108

Fair

Over: MIDDLE PATUXENT RIVER

2.02 MILES EAST OF MD 216, Howard, MD

Built 1985 Load: 38.1 t ADT: 19,870

MD 445

Fair

Over: SWAN CREEK

2.92 MILES SOUTH OF MD 21, Kent, MD

Built 1929 Load: 38.1 t ADT: 780

Showing 2,201-2,250 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.