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

PENNINGTON ROAD

Good

Over: THOMAS RUN

0.2 MILE E OF THOMAS R RD, Harford, MD

Built 1975 Load: 57.6 t ADT: 249

OLD SOUTHAMPTON RO

Good

Over: BYNUM RUN

0.6 MILES S OF MD 543, Harford, MD

Built 1930 Load: 57.6 t ADT: 51

MD 100

Good

Over: OLD MONT. RD & DEEP RUN

0.62 MILE WEST OF MD 103, Howard, MD

Built 1998 Load: 57.6 t ADT: 82,092

MD 100

Good

Over: DORSEY STATION ACCESS RD

0.39 M W OF AA CO LINE, Howard, MD

Built 1996 Load: 57.6 t ADT: 83,402

MD 100

Good

Over: DORSEY STATION ACCESS RD

0.39 M W OF AA CO LINE, Howard, MD

Built 1996 Load: 57.6 t ADT: 83,402

BURNING TREE ROAD

Good

Over: BOOZE CREEK

0.5 MILES SOUTH OF MD 191, Montgomery, MD

Built 2008 Load: 57.6 t ADT: 1,938

Ramp WS & WN

Good

Over: Ramp NW

0.5 mi S Briggs Chaney Rd, Montgomery, MD

Built 2011 Load: 57.6 t ADT: 2,706

RAGAN ROAD

Good

Over: BRANCH OF OCTORARO CREEK

0.89 MI E OF US RTE 222, Cecil, MD

Built 2011 Load: 57.7 t ADT: 327

I - 195 WB

Good

Over: RAMP X

BWI AIRPORT, Anne Arundel, MD

Built 2002 Load: 58.0 t ADT: 20,000

WHITE MARSH ROAD

Good

Over: TRIBUTARY TO WHITE MARSH

1.0 MI E OF MD RT 1, Baltimore, MD

Built 2005 Load: 58.0 t ADT: 3,320

I695W RAMP TO I95N

Good

Over: STEMMERS RUN

I95/I695 INTERCHANGE, Baltimore, MD

Built 2008 Load: 58.0 t ADT: 13,836

STEVENSON ROAD

Good

Over: LITTLE NORTHEAST CREEK

0.02 MI E OF STEVENSON RD, Cecil, MD

Built 2008 Load: 58.0 t ADT: 3,009

GALESTOWN RELIANCE

Good

Over: GALESTOWN MILLPOND

1.5 Mi. NE of JNC Rt 313, Dorchester, MD

Built 2008 Load: 58.0 t ADT: 1,259

ARNOLDTOWN ROAD

Good

Over: TRIB. OF BROAD RUN

0.4 MI W OF PICNIC WOODS, Frederick, MD

Built 1984 Load: 58.0 t ADT: 407

BOTTOM ROAD

Good

Over: OVERSHOT BRANCH

0.03 MILES N OF GUYTON RD, Harford, MD

Built 1978 Load: 58.0 t ADT: 300

CLARKSBURG ROAD

Good

Over: LITTLE BENNETT CREEK TRI

2.8 MILES NORTH OF MD 355, Montgomery, MD

Built 1988 Load: 58.0 t ADT: 2,969

MD 55

Good

Over: BRADDOCK RUN

0.27 MI W OF IS 68, Allegany, MD

Built 1950 Load: 58.5 t ADT: 2,552

US 220

Good

Over: EVITTS CREEK

0.71 MILE NORTH OF I-68, Allegany, MD

Built 1999 Load: 58.5 t ADT: 3,841

ACTON LANE

Good

Over: MATTAWOMAN CREEK

ON CHARLES COUNTY LINE, Charles, MD

Built 2001 Load: 58.5 t ADT: 9,665

SINGLETON DRIVE

Good

Over: TRIB OF PETER PAN RUN

EAST OF ADDISON WOODS RD, Frederick, MD

Built 1999 Load: 58.5 t ADT: 600

TALBOT RUN ROAD

Good

Over: TALBOT BRANCH

0.25 MI E OF WOODVILLE RD, Frederick, MD

Built 1979 Load: 58.5 t ADT: 215

SINGER ROAD

Good

Over: MOUNTAIN BRANCH

1.7 MILES E OF MD 152, Harford, MD

Built 2003 Load: 58.5 t ADT: 4,530

DRY BRANCH ROAD

Good

Over: TRIB / DEER CREEK

0.4 MILES W OF MD 23, Harford, MD

Built 1999 Load: 58.5 t ADT: 82

MD 200 (ICC) EB

Good

Over: Good Hope Tributary

0.48 Mi East of MD650, Montgomery, MD

Built 2010 Load: 58.5 t ADT: 31,755

Ramp ES

Good

Over: Ramp SE

0.12 mi W of 29/200 I/C, Montgomery, MD

Built 2011 Load: 58.5 t ADT: 2,449

EMORY ROAD

Good

Over: DEEP RUN

0.38 MI E OF WESLEY ROAD, Carroll, MD

Built 2000 Load: 59.0 t ADT: 150

MD 7C

Good

Over: AMTRAK

2.34 MILE NORTH OF MD 272, Cecil, MD

Built 1991 Load: 59.0 t ADT: 4,860

MD 180 EASTBOUND

Good

Over: US 15

0.49 MILE EAST OF IS 70, Frederick, MD

Built 2020 Load: 59.0 t ADT: 27,750

MUNCASTER MILL RD

Good

Over: MD 200 (ICC)

2.33 MI W OF MD 97, Montgomery, MD

Built 2010 Load: 59.0 t ADT: 19,690

BEAVER DAM ROAD

Good

Over: BEAVER DAM CREEK

0.15 MI W OF MD 295, Prince George's, MD

Built 2003 Load: 59.0 t ADT: 450

BEE OAK ROAD

Good

Over: TRIBUTARY OF WOLF DEN BR

1 MI S OF CEDARVILLE RD, Prince George's, MD

Built 1975 Load: 59.0 t ADT: 100

LEITERSBURG-SMITHS

Good

Over: LITTLE ANTIETAM CREEK

1.02 MI SE OF MD RTE 60, Washington, MD

Built 1981 Load: 59.0 t ADT: 2,760

OLD FORGE ROAD

Good

Over: MARSH RUN

0.76 MI E OF MD RTE 60, Washington, MD

Built 1998 Load: 59.0 t ADT: 1,214

LITTLE TONOLOWAY A

Good

Over: C&O CANAL

0.2 miles from Little Ton, Washington, MD

Built 1969 Load: 59.0 t ADT: 72

BAYSIDE ROAD

Good

Over: PAW PAW CREEK

0.19 MI SW OF MD 365, Worcester, MD

Built 2021 Load: 59.0 t ADT: 234

BARKSDALE ROAD

Good

Over: WEST BRANCH OF CHRISTIAN

0.32 MI E OF APPLETON RD, Cecil, MD

Built 2008 Load: 59.3 t ADT: 2,053

MD 56

Good

Over: TOMS RUN

1.9 MILES WEST OF MD 68, Washington, MD

Built 2023 Load: 59.3 t ADT: 500

RESH MILL ROAD

Good

Over: GRAVE RUN

0.56 MI N OF FALLS RD, Baltimore, MD

Built 2005 Load: 59.4 t ADT: 232

MD 410

Good

Over: GEORGETOWN BRANCH TRAIL

0.52 MILE EAST OF MD 355, Montgomery, MD

Built 1997 Load: 59.4 t ADT: 26,061

MD 36

Good

Over: GEORGES CREEK

1.03 M S OF BR NO 0112700, Allegany, MD

Built 2008 Load: 59.9 t ADT: 7,706

MD 36

Good

Over: N BRANCH POTOMAC RIVER

ON WEST VIRGINIA LINE, Allegany, MD

Built 1994 Load: 59.9 t ADT: 4,720

DOGWOOD ROAD

Good

Over: DOGWOOD RUN

2.74 MI. W. OF IS 695, Baltimore, MD

Built 2018 Load: 59.9 t ADT: 7,043

NEW CUT ROAD

Good

Over: MILL POND STREAM

1.02 MILES N OF MD 282, Cecil, MD

Built 2000 Load: 59.9 t ADT: 242

CEDARDAY DRIVE

Good

Over: TRIBUTARY TO BYNUM RUN

1.0 MILES E OF CEDAR LANE, Harford, MD

Built 2005 Load: 59.9 t ADT: 221

OAK VALLEY DRIVE

Good

Over: TRIB / PLUMTREE RUN

0.3 MILES S OF W RIDING D, Harford, MD

Built 2005 Load: 59.9 t ADT: 55

LINDEN LANE

Good

Over: CSXT RAILROAD

0.5 MI W OF SEMINARY ROAD, Montgomery, MD

Built 1996 Load: 59.9 t ADT: 4,090

PENNYFIELD LOCK RO

Good

Over: UNNAMED TRIBUTARY

0.8 MI S OF RIVER ROAD, Montgomery, MD

Built 2017 Load: 59.9 t ADT: 529

LITTLE SENECA PKWY

Good

Over: LITTLE SENECA CREEK

0.1 MI. E. OF MD 355, Montgomery, MD

Built 2014 Load: 59.9 t ADT: 10,875

MD 200 Ramp ES

Good

Over: MD 200 (ICC) Ramp SB

0.10 Mi. West of US 29, Montgomery, MD

Built 2010 Load: 59.9 t ADT: 2,449

IS 595 RAMP A(5)

Good

Over: COBB ROAD

IS 595,IS 95-495 INT, Prince George's, MD

Built 1988 Load: 59.9 t ADT: 22,154

Showing 4,751-4,800 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.