State profile · Below median Poor share

Maryland bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Maryland, based on the FHWA National Bridge Inventory.

5,527
Public bridges
25.9%
Good condition
4.3%
Poor condition

Data updated May 2026

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 whose lowest applicable component is rated 0-4

-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 - Poor-condition 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 by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Maryland on the same metric.

CT

Connecticut

3.95% top marginal rate
Structure
Progressive
Burden @ $100K
$4,277

TN

Tennessee

3.97% top marginal rate
Structure
Progressive
Burden @ $100K
$20,426
Selected

MD

Maryland

4.27% top marginal rate
Structure
Progressive
Burden @ $100K
$5,527

CO

Colorado

4.32% top marginal rate
Structure
Progressive
Burden @ $100K
$8,965

OR

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 the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

All Bridges in Maryland

MD 355

Good

Over: GREAT SENECA CREEK

1.32 MILES N OF MD 124, Montgomery, MD

Built 2000 Load: 49.0 t ADT: 31,050

HOWARD CHAPEL RD

Good

Over: PATUXENT RIVER

1.7 MI NORTH OF MD 650, Montgomery, MD

Built 2002 Load: 49.0 t ADT: 563

MD200 Ramp I-A

Good

Over: I95 NB-CD

MD200EB Ramp I-A to I95NB, Prince George's, MD

Built 2011 Load: 49.0 t ADT: 12,656

WILSON BOULEVARD

Good

Over: PINE STREET

0.05 MI E of Route 11, Washington, MD

Built 1983 Load: 49.0 t ADT: 16,448

SANDYFIELD ROAD

Good

Over: NINEPIN BRANCH

0.76 MI S OF MD 374, Worcester, MD

Built 2002 Load: 49.0 t ADT: 90

MD 272

Good

Over: AMTRAK

0.32 MILE SOUTH OF US 40, Cecil, MD

Built 2020 Load: 49.2 t ADT: 11,950

NEW VAIL ST

Good

Over: Canton RR

0.0 MI. S of Keith Ave, Baltimore city, MD

Built 1990 Load: 49.4 t ADT: 1,183

COOLEY MILL ROAD

Good

Over: ROCK RUN

0.7 MI SE OF ROCK RUN RD, Harford, MD

Built 1997 Load: 49.4 t ADT: 200

DRIVEWAY OFF AINTR

Good

Over: WATTS BRANCH

WOOTTONS MILL PARK, Montgomery, MD

Built 2009 Load: 49.4 t ADT: 20

LONGMEAD CROSSING

Good

Over: MD 200 (ICC)

3.61 MI WEST OF MD650, Montgomery, MD

Built 2010 Load: 49.4 t ADT: 6,790

CONTEE ROAD

Good

Over: CSX RAILROAD

0.1 MI EAST OF US 1, Prince George's, MD

Built 1997 Load: 49.4 t ADT: 22,202

HALFWAY BOULEVARD

Good

Over: TRIBUTARY OF CONOCOCHEAG

0.6 MI WEST OF I-81, Washington, MD

Built 2005 Load: 49.4 t ADT: 4,256

SOUTH POINTE DRIVE

Good

Over: TRIBUTARY OF ANTIETAM CR

.3 MI N OF E OAK RIDGE DR, Washington, MD

Built 2000 Load: 49.4 t ADT: 3,885

MD 135

Good

Over: GEORGES CREEK

0.02 MI E OF MD 36, Allegany, MD

Built 1963 Load: 49.9 t ADT: 6,642

DOLFIELD BOULEVARD

Good

Over: RED RUN BRANCH

0.9 MI S OF RED RUN BLVD, Baltimore, MD

Built 2010 Load: 49.9 t ADT: 22,984

SHEPHERD'S MILL RD

Good

Over: LITTLE PIPE CREEK

JUST E OF UNION BRIDGE, Carroll, MD

Built 2023 Load: 49.9 t ADT: 613

COXEY BROWN ROAD

Good

Over: LITTLE CATOCTIN CREEK

AT HARMONY RD INT, Frederick, MD

Built 1983 Load: 49.9 t ADT: 517

CHESTNUT HILL ROAD

Good

Over: STOUT BOTTLE BRANCH

0.6 MILES NW OF MD 543, Harford, MD

Built 2020 Load: 49.9 t ADT: 681

MD 100

Good

Over: EXECUTIVE PARK DRIVE

0.91 MILE WEST OF MD 104, Howard, MD

Built 1998 Load: 49.9 t ADT: 79,752

MD 100

Good

Over: CSX RR, O'CONNOR RD

0.24 M W OF AA CO LINE, Howard, MD

Built 1996 Load: 49.9 t ADT: 83,402

MD 100

Good

Over: CSX RR, O'CONNOR ROAD

0.24 M W OF AA CO LINE, Howard, MD

Built 1996 Load: 49.9 t ADT: 83,402

PARK VALLEY ROAD

Good

Over: SLIGO CREEK

AT SLIGO CR PKWY, Montgomery, MD

Built 2019 Load: 49.9 t ADT: 1,126

IS 595, RAMP 'A'

Good

Over: BALD HILL BRANCH

1 MI E OF JCT IS 95, Prince George's, MD

Built 1955 Load: 49.9 t ADT: 144,254

MARYLAND 63

Good

Over: CSX TRANS.

1.08 MILES NORTH OF US 11, Washington, MD

Built 1959 Load: 49.9 t ADT: 12,600

MARBLE QUARRY ROAD

Good

Over: LITTLE ANTIETAM CREEK

1.02 MI NW OF MD RTE 67, Washington, MD

Built 2007 Load: 49.9 t ADT: 223

GORE MILL ROAD

Good

Over: LITTLE FALLS

1.2 MI. N MIDDLETOWN ROAD, Baltimore, MD

Built 2019 Load: 50.2 t ADT: 170

US 220

Good

Over: PEA VINE RUN & BEALS MIL

1063 MILES NORTH OF IS 68, Allegany, MD

Built 1999 Load: 50.3 t ADT: 3,841

STONEY RUN ROAD

Good

Over: MD 170 / AMTRAK

0.9 MI SOUTH OF I-195, Anne Arundel, MD

Built 1982 Load: 50.3 t ADT: 14,344

NOTTINGHAM RD

Good

Over: CSX RAILROAD

0.82 MI S OF UNION CHURCH, Cecil, MD

Built 2012 Load: 50.3 t ADT: 1,423

FRIST ROAD

Good

Over: BASIN RUN

0.19 MI S OF LIBERTY G RD, Cecil, MD

Built 2007 Load: 50.3 t ADT: 405

MONUMENT ROAD

Good

Over: GRINDSTONE RUN

0.75 MI WEST OF MD RTE 17, Frederick, MD

Built 1982 Load: 50.3 t ADT: 421

TURNER ROAD

Good

Over: TRIB / L GUNPOWDER FALLS

0.4 MILES N OF POCOCK RD, Harford, MD

Built 2003 Load: 50.3 t ADT: 101

BAILEY ROAD

Good

Over: SOUTH STIRRUP RUN

0.5 MI E OF SHARON ACR RD, Harford, MD

Built 1953 Load: 50.3 t ADT: 155

MD 97 NB

Good

Over: MD 200 (ICC)

0.59 MI NORTH OF MD 28, Montgomery, MD

Built 2010 Load: 50.3 t ADT: 23,218

MD 200 (ICC) Ramp

Good

Over: MD 200 (ICC) Ramp SE

0.2 mi W US29/MD200 I/C, Montgomery, MD

Built 2010 Load: 50.3 t ADT: 2,449

WARNER AVENUE

Good

Over: TRIBUTARY TO BEAVERDAM C

0.03 MI N OF PARKWOOD ST, Prince George's, MD

Built 1997 Load: 50.3 t ADT: 5,142

64TH AVENUE

Good

Over: CABIN BRANCH

0.11 MI N OF STATE STREET, Prince George's, MD

Built 1980 Load: 50.3 t ADT: 235

SANG RUN ROAD

Good

Over: SANG RUN

0.98 MI SW OF BISHOFF RD, Garrett, MD

Built 2021 Load: 50.5 t ADT: 412

NATIONAL BUSINESS

Good

Over: TRIBUTARY TO DORSEY RUN

.68 M N OF TECHNOLOGY DR, Anne Arundel, MD

Built 2011 Load: 50.8 t ADT: 13,301

MD 150

Good

Over: BACK RIVER

0.82 MILE EAST OF MD 695, Baltimore, MD

Built 1988 Load: 50.8 t ADT: 29,630

MD 158

Good

Over: Tradepoint Railroad

0.22 MILE WEST OF MD 151, Baltimore, MD

Built 1995 Load: 50.8 t ADT: 12,161

CORBETT ROAD

Good

Over: TRIBUTARY TO GUNPOWDER F

1.3 MILES EAST OF MD 45, Baltimore, MD

Built 1920 Load: 50.8 t ADT: 714

SB I-83 OFF-RAMP t

Good

Over: MTA LIGHT RAIL

OFFRAMP SB JFX @ CLDSPRNG, Baltimore city, MD

Built 1962 Load: 50.8 t ADT: 5,149

I-83SB OFF-RAMP

Good

Over: MTA LIGHT RAIL

I-83 AT NORTHERN PKWY, Baltimore city, MD

Built 1962 Load: 50.8 t ADT: 23,357

I-895 RAMP B

Good

Over: LOMBARD STREET

Milepost M12.51, Baltimore city, MD

Built 1994 Load: 50.8 t ADT: 66,347

PARKING LOT ROAD

Good

Over: BLUE BLAZES CREEK

US-15N, WEST ON MC-77 TO, Frederick, MD

Built 2019 Load: 50.8 t ADT: 20

GREENE ROAD

Good

Over: SAW MILL BRANCH

0.3 MILES NE OF BALT CO, Harford, MD

Built 1952 Load: 50.8 t ADT: 616

I-370 WBR

Good

Over: IS-370 RP1, MD200 RP7

5.67 MI WEST OF MD97, Montgomery, MD

Built 2010 Load: 50.8 t ADT: 39,531

WHITE GROUND ROAD

Good

Over: BUCKLODGE BRANCH

2 MILES NORTH OF MD 28, Montgomery, MD

Built 2012 Load: 50.8 t ADT: 823

WATKINS MILL ROAD

Good

Over: WHETSTONE RUN

0.5 MILES EAST OF MD 355, Montgomery, MD

Built 1997 Load: 50.8 t ADT: 8,397

Showing 4,551-4,600 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.

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.