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

TIBER ALLEY

Poor

Over: TIBER RIVER

0.01 MI S MAIN STREET, Howard, MD

Built 1935 Load: 12.2 t ADT: 45

GREEN SPRING ROAD

Poor

Over: NORTH BRANCH OF POTOMAC

0.3 MI S OF MD RTE 51, Allegany, MD

Built 1937 Load: 12.7 t ADT: 880

NOBLES MILL ROAD

Poor

Over: DEER CREEK

0.8 MI E MAIN ST, Harford, MD

Built 1883 Load: 12.7 t ADT: 70

DAISY ROAD

Poor

Over: LITTLE CATTAIL CREEK

0.3 MI N JENNINGS CHAPEL, Howard, MD

Built 1935 Load: 12.7 t ADT: 1,525

RUSSELL ROAD

Poor

Over: BASIN RUN

0.24 MI W OF COLORA RD, Cecil, MD

Built 1930 Load: 13.2 t ADT: 94

DOGWOOD ROAD

Poor

Over: DOGWOOD RUN

200' SW OF HOLLIFIELD RD, Baltimore, MD

Built 1929 Load: 13.6 t ADT: 3,062

YARROWSBURG ROAD

Poor

Over: ISRAEL CREEK

0.3 MI W OF MD RTE 67, Washington, MD

Built 1940 Load: 13.6 t ADT: 687

PINEY GROVE ROAD

Poor

Over: CSX RAILROAD

0.1 MI SE OF OLD HANOVER, Baltimore, MD

Built 1907 Load: 14.1 t ADT: 551

BUFFALO RUN ROAD

Poor

Over: BUFFALO RUN

0.2 MI NE OF MD RTE 42, Garrett, MD

Built 1989 Load: 14.1 t ADT: 48

OLD LANDOVER ROAD

Poor

Over: BEAVERDAM CREEK

0.14 MI N OF MD 202, Prince George's, MD

Built 1966 Load: 14.1 t ADT: 163

JACOBS ROAD

Poor

Over: MAPLE RUN

5.61 MI. S. OF I-68, Allegany, MD

Built 1978 Load: 15.0 t ADT: 22

HOOKERS MILL ROAD

Poor

Over: BYNUM RUN

0.8 MILES W OF MD 136, Harford, MD

Built 1957 Load: 15.0 t ADT: 3,986

CORNFIELD HARBOR D

Poor

Over: POINT LOOKOUT CREEK

1 Mile South of SR 5, St. Mary's, MD

Built 1970 Load: 15.0 t ADT: 150

WILDWOOD AVENUE

Poor

Over: TRIBUTARY TO HERRING RUN

0.12 MI E OF OAKLEIGH AVE, Baltimore, MD

Built 1960 Load: 15.4 t ADT: 200

MARUMSCO ROAD

Poor

Over: MARUMSCO CREEK

1.5 MI WEST OF MARUMSCO, Somerset, MD

Built 1950 Load: 15.6 t ADT: 141

FAIRVIEW AVENUE

Poor

Over: CARROLL CREEK

0.2 MI SOUTH OF US 15, Frederick, MD

Built 1963 Load: 16.3 t ADT: 2,674

WARREN ROAD

Poor

Over: GUNPOWDER FALLS

2.3 MI E YORK RD, Baltimore city, MD

Built 1923 Load: 16.8 t ADT: 6,234

FLEMING MILL ROAD

Poor

Over: DIVIDING CREEK

WOR-SOMER CO LINE, Worcester, MD

Built 1974 Load: 16.8 t ADT: 90

MANTUA MILL ROAD

Poor

Over: DEADMAN RUN

0.7 MI N OF TUFTON AVE, Baltimore, MD

Built 1930 Load: 17.2 t ADT: 388

MCKINSTRYS MILL RD

Poor

Over: SAMS CREEK

ON FREDERICK CO LINE, Carroll, MD

Built 1972 Load: 17.2 t ADT: 119

BESTPITCH FERRY RD

Poor

Over: TRANSQUAKING RIVER

0.1 MI W OF GRIF NECK RD, Dorchester, MD

Built 1946 Load: 17.2 t ADT: 93

GREGG ROAD

Poor

Over: GAREY MILL POND BRANCH

2.5 MILES NORTH OF MD 317, Caroline, MD

Built 1950 Load: 17.7 t ADT: 40

OLD KAYS MILL ROAD

Poor

Over: BEAVER RUN

AT HUGHES ROAD, Carroll, MD

Built 1974 Load: 18.1 t ADT: 209

MOUTH OF MONOCACY

Poor

Over: LITTLE MONOCACY RIVER

0.5 MI E OF MT EPHRAM RD, Montgomery, MD

Built 1971 Load: 18.1 t ADT: 79

VALLEYWOOD DRIVE

Poor

Over: JOSEPH'S BRANCH

0.5 MI. EAST OF ROUTE 185, Montgomery, MD

Built 1960 Load: 18.1 t ADT: 706

HOTEL ROAD

Poor

Over: CAREY BRANCH

0.13 MI N OF HAMMOND ROAD, Worcester, MD

Built 1989 Load: 18.1 t ADT: 110

LITTLE ORLEANS ACC

Poor

Over: C&O CANAL

Little Orleans Campground, Allegany, MD

Built 1969 Load: 18.6 t ADT: 72

BLOOMERY ROAD

Poor

Over: MARSHYHOPE CREEK

1.19 MILES SW OF DELAWARE, Caroline, MD

Built 1951 Load: 18.6 t ADT: 540

BUFFALO RUN ROAD

Poor

Over: BUFFALO RUN

0.37 MI NE OF MD RTE 42, Garrett, MD

Built 1989 Load: 18.6 t ADT: 44

DARGAN BEND ACCESS

Poor

Over: C&O CANAL

Harpers Ferry Road to Bac, Washington, MD

Built 1969 Load: 18.8 t ADT: 159

OLD MILL ROAD

Poor

Over: MARYLAND MIDLAND RAILROA

1000 FEET SOUTH OF MD 77, Frederick, MD

Built 1975 Load: 19.0 t ADT: 97

ERICSSON ROAD

Poor

Over: CLARA BARTON PARKWAY

1.3 MILES SOUTH OF I-495., Montgomery, MD

Built 1962 Load: 19.0 t ADT: 16,120

TUNIS MILLS ROAD

Poor

Over: LEEDS CREEK

6 MI NW OF EASTON, Talbot, MD

Built 1963 Load: 19.0 t ADT: 820

HARRIS MILL ROAD

Poor

Over: LITTLE DEER CREEK

0.12 MI E OF LENTZ RD, Baltimore, MD

Built 1920 Load: 20.4 t ADT: 734

HURLEY AVENUE

Poor

Over: WATTS BRANCH TRIBUTARY

0.1 MI S OF JCT SR 28, Montgomery, MD

Built 1969 Load: 20.4 t ADT: 5,724

HALFWAY BOULEVARD

Poor

Over: NORFOLK SOUTHERN RAILROA

0.64 MI E OF IS 81, Washington, MD

Built 1967 Load: 20.4 t ADT: 21,909

TWILLEYS BRIDGE RD

Poor

Over: NASSAWANGO CREEK

3 MI S OF MD RTE 350, Wicomico, MD

Built 1951 Load: 20.9 t ADT: 59

SNYDERS LANDING AC

Poor

Over: C&O CANAL

2.0 miles west of Sharpsb, Washington, MD

Built 1969 Load: 21.1 t ADT: 212

TAYLORS LANDING AC

Poor

Over: C&O CANAL

0.1 miles from Taylors La, Washington, MD

Built 1969 Load: 21.1 t ADT: 530

FREDERICK ROAD

Poor

Over: HUNTING CREEK

0.2 MI SW OF MD 77, Frederick, MD

Built 1928 Load: 21.3 t ADT: 1,163

PHOENIX ROAD

Poor

Over: GUNPOWDER FALLS

1.3 MI E YORK RD, Baltimore, MD

Built 1922 Load: 21.8 t ADT: 2,132

HARRY S TRUMAN DRI

Poor

Over: SOUTHWEST BRANCH

1.48 MI SOUTH OF MD 214, Prince George's, MD

Built 1974 Load: 21.8 t ADT: 16,141

DOUBLE HILL ROAD

Poor

Over: WATTS CREEK

0.47 MI NE OF MD 404, Caroline, MD

Built 1913 Load: 22.2 t ADT: 570

MILL RUN ROAD

Poor

Over: MILL RUN

1.2 M NE FRNDSVLLEADDISON, Garrett, MD

Built 1984 Load: 22.2 t ADT: 27

STABLERS CHURCH RO

Poor

Over: LITTLE FALLS

1.0 MI W OF YORK RD, Baltimore, MD

Built 1975 Load: 22.7 t ADT: 690

CARROLLTON ROAD

Poor

Over: EAST BRANCH PATAPSCO RIV

0.59 MI E OF RIDGE ROAD, Carroll, MD

Built 1972 Load: 22.7 t ADT: 590

TRINITY CHURCH RD

Poor

Over: GILBERT SWAMP RUN

2.05 MILES S OF MD 6, Charles, MD

Built 1927 Load: 22.7 t ADT: 600

MARTINSBURG ROAD

Poor

Over: POTOMAC RIVER TRIBUTARY

1.2 MI N OF WHITES FERRY, Montgomery, MD

Built 1925 Load: 22.7 t ADT: 1,322

SPARKS ROAD

Poor

Over: GUNPOWDER FALLS

0.5 MI E OF YORK RD, Baltimore, MD

Built 1888 Load: 23.1 t ADT: 1,100

TEMPLE HILL ROAD

Poor

Over: TINKERS CREEK

1.91 MILES N OF MD 223, Prince George's, MD

Built 1960 Load: 23.6 t ADT: 13,216

Showing 5,301-5,350 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.