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

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

UPPER BECKLEYSVILL

Structurally Deficient

Over: MURPHY RUN

0.05 MI E OF GROSS MIL RD, Carroll, MD

Built 1960 Load: 10.9 t ADT: 1,745

FAYETTE STREET

Structurally Deficient

Over: CSXT RAILROAD

.08 MI W OF CUMBERLAND ST, Allegany, MD

Built 1885 Load: 12.2 t ADT: 109

SMITHVILLE ROAD

Structurally Deficient

Over: SULLIVAN BRANCH

2.3 MI NE OF FEDERALSBURG, Caroline, MD

Built 1946 Load: 12.7 t ADT: 545

APPLETOWN ROAD

Structurally Deficient

Over: TRIBUTARY OF DOG CREEK

0.05 MI E OF MD RTE 67, Washington, MD

Built 1920 Load: 12.7 t ADT: 172

GARRETT PARK ROAD

Structurally Deficient

Over: ROCK CREEK

100 FT W OF BEACH DRIVE, Montgomery, MD

Built 1965 Load: 13.6 t ADT: 3,554

MARSH ROAD

Structurally Deficient

Over: SHANKS CREEK

SMITH ISLAND, Somerset, MD

Built 1971 Load: 15.0 t ADT: 50

ABINGDON ROAD

Structurally Deficient

Over: CSX RAILROAD

0.1 MILES N OF US 40, Harford, MD

Built 1940 Load: 16.3 t ADT: 9,272

ALAN FIKE ROAD

Structurally Deficient

Over: MILL RUN

0.02 MI S MILL RUN ROAD, Garrett, MD

Built 1935 Load: 17.7 t ADT: 11

LONG SWAMP ROAD

Structurally Deficient

Over: SULLIVAN BRANCH

1.3 MI SE OF AGNER, Caroline, MD

Built 1953 Load: 19.5 t ADT: 106

SANDCHAIN ROAD

Structurally Deficient

Over: LITTLE PATUXENT RIVER

.03 MI W OF YOUNGHEART, Howard, MD

Built 1972 Load: 21.3 t ADT: 1,209

SMITH ISLAND ROAD

Structurally Deficient

Over: SHANKS CREEK

0.5 MI N OF RHODES POINT, Somerset, MD

Built 1984 Load: 25.4 t ADT: 55

PATAPSCO ROAD

Structurally Deficient

Over: EAST BR PATAPSCO RIVER

0.55 MI W OF WESLEY ROAD, Carroll, MD

Built 1900 Load: 28.6 t ADT: 171

HANOVER STREET

Structurally Deficient

Over: CSX

HANOVER ST OVER CSX RR, Baltimore city, MD

Built 1929 Load: 32.7 t ADT: 28,030

SISSON STREET

Structurally Deficient

Over: CSX

0.3 MI W OF MARYLAND AVE, Baltimore city, MD

Built 1914 Load: 34.0 t ADT: 6,500

SHOOKSTOWN ROAD

Structurally Deficient

Over: CARROLL CREEK

0.4 MI N. OF US 15 EXIT 7, Frederick, MD

Built 1911 Load: 35.8 t ADT: 6,750

OLD COURT ROAD

Structurally Deficient

Over: GWYNNS FALLS AND MTA MET

1.1 MI SW OF MD RTE 140, Baltimore, MD

Built 1961 Load: 36.3 t ADT: 16,335

BEECHWOOD ROAD

Structurally Deficient

Over: KOONTZ RUN

1 MILE N. of DOUGLAS HILL, Allegany, MD

Built 1983 Load: 39.9 t ADT: 56

RUSSELL STREET

Structurally Deficient

Over: CSX

0.2 MI S OF I-95, Baltimore city, MD

Built 1963 Load: 44.4 t ADT: 46,276

OPOSSUMTOWN PIKE

Structurally Deficient

Over: BIG TUSCARORA CREEK

AT SUNDAYS LANE INT, Frederick, MD

Built 1988 Load: 48.1 t ADT: 1,028

PERRING PKWY RAMP

Structurally Deficient

Over: HERRING RUN

ON RAMP WB NORTHERN PKWY, Baltimore city, MD

Built 1965 Load: 55.3 t ADT: 74,402

HORNETS NEST ROAD

Structurally Deficient

Over: FRIENDS CREEK

2.0 MILES W OF RIFFLE RD, Frederick, MD

Built 1981 Load: 58.0 t ADT: 179

LAMBSON FOREST ROA

Structurally Deficient

Over: MILLS BRANCH

1 MI SE OF MD RTE 290, Kent, MD

Built 1975 Load: 59.4 t ADT: 265

McKENDREE ROAD

Structurally Deficient

Over: LYONS CREEK

1.9 MI EAST OF ROUTE 4, Anne Arundel, MD

Built 1965 Load: 99.9 t ADT: 623

REMINGTON AVENUE

Structurally Deficient

Over: STONEY RUN

0.9 MI N OF NORTH AVE, Baltimore city, MD

Built 1900 Load: 99.9 t ADT: 4,280

ILCHESTER ROAD

Structurally Deficient

Over: BONNIE BRANCH

AT BONNIE BRANCH RD, Howard, MD

Built 1945 Load: 99.9 t ADT: 1,281

Showing 5,501-5,527 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.