State profile · Below median Poor share

Maryland bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Maryland.

5,484
Public bridges
32.3%
Good condition
4.6%
Poor condition

Maryland holds 5,484 public highway bridges (#34 of 52 by inventory) with a 4.56% Poor share (#38 of 52 by Poor share).

That is 4.6% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 15 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

5,484

Public highway bridges in Maryland

Good Condition

32.3%

1,771 bridges rated 7-9

-17.7pp vs 50% benchmark

Poor Condition

4.6%

250 bridges whose lowest applicable component is rated 0-4

-3.0pp vs national avg 7.5%

Maryland vs national bridge condition

Maryland - Good condition share 32.3%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Maryland - Poor-condition share 15.2%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Maryland in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: Maryland has 5,484 bridges and a 4.6% Poor-condition share in the 2024 NBI, rank #15 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: Maryland has 5,484 bridges and a 4.6% Poor-condition share in the 2024 NBI, rank #15 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

Maryland vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

5,484 34th of 54 higher than 20 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for Maryland

The highlighted point is Maryland: 5,484 bridges and 4.56% in Poor condition, rank #15 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Maryland on that same Poor-share ordering:

  • Minnesota: 13,532 bridges · 4.44% Poor
  • New Mexico: 4,035 bridges · 4.51% Poor
  • Maryland: 5,484 bridges · 4.56% Poor
  • Oregon: 8,305 bridges · 4.61% Poor
  • Connecticut: 4,365 bridges · 4.72% Poor

The full national sortable table lives on the rankings page.

Material families in Maryland

Exclusive FHWA material families across all 5,484 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Maryland’s inventory

State agency holds 53.4% of the 5,484 public highway bridges filed under Maryland in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Maryland’s bridges were built

Pre-1950 construction accounts for 15.9% of the 5,484 bridges with a recorded original year in Maryland. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Maryland32.3%63.1%GoodFairPoor
Bridge inventory deck-condition mix - Maryland (FHWA NBI)

Counties (24)

Allegany 245 Anne Arundel 389 Baltimore 783 Baltimore city 374 Calvert 33 Caroline 70 Carroll 205 Cecil 193 Charles 94 Dorchester 47 Frederick 486 Garrett 139 Harford 275 Howard 309 Kent 44 Montgomery 515 Prince George's 576 Queen Anne's 88 Somerset 46 St. Mary's 50 Talbot 42 Washington 300 Wicomico 99 Worcester 82

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.

MN

Minnesota

4.44% top marginal rate
Structure
Progressive
Burden @ $100K
$13,532

NM

New Mexico

4.51% top marginal rate
Structure
Progressive
Burden @ $100K
$4,035
Selected

MD

Maryland

4.56% top marginal rate
Structure
Progressive
Burden @ $100K
$5,484

OR

Oregon

4.61% top marginal rate
Structure
Progressive
Burden @ $100K
$8,305

CT

Connecticut

4.72% top marginal rate
Structure
Progressive
Burden @ $100K
$4,365

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.

WASHINGTON STREET

Poor

Over: CSXT RAILROAD

0.2 MI W OF CUMBERLAND ST, Allegany, MD

Built 1930 Load: 0.0 t ADT: 110

CUMBERLAND STREET

Poor

Over: CSXT RAILROAD

0.6 MI E OF WASHINGTON ST, Allegany, MD

Built 1929 Load: 0.0 t ADT: 110

MILL STREET

Poor

Over: ROCK RUN

.01 MI S. OF RACE STREET, Cecil, MD

Built 1940 Load: 0.0 t ADT: 100

BACK LANDING ROAD

Poor

Over: HUNTING CREEK

ON CAROLINE COUNTY LINE, Dorchester, MD

Built 1941 Load: 0.0 t

TALBOT AVENUE

Poor

Over: CSXT RAILROAD

0.2 MI E OF MICHIGAN AVE, Montgomery, MD

Built 1918 Load: 0.0 t ADT: 1,430

TAYLOR MILL ROAD

Poor

Over: OLD MILL STREAM BRANCH

0.7 MILE EAST OF MD 213, Queen Anne's, MD

Built 1955 Load: 0.0 t ADT: 100

All Bridges in Maryland

SPRUCE RUN ROAD

Good

Over: MIDDLE CREEK

0.1 MI N OF MD RTE 17, Frederick, MD

Built 1982 Load: 42.6 t ADT: 181

HOLLOW ROAD

Good

Over: LITTLE CATOCTIN CREEK

AT HARMONY RD INT, Frederick, MD

Built 1981 Load: 42.6 t ADT: 126

MURRAY HILL ROAD

Good

Over: MIDDLE PATUXENT RIVER

0.1 MI S VOLLMERHAUSEN RD, Howard, MD

Built 1988 Load: 42.6 t ADT: 3,576

STEVENS FOREST ROA

Good

Over: LITTLE PATUXENT RIVER

0.1 MI E OF US 29, Howard, MD

Built 1990 Load: 42.6 t ADT: 5,350

KIRK WOODS PARK RO

Good

Over: LITTLE TONOLOWAY CREEK

0.76 MI. W OF US 40, Washington, MD

Built 2008 Load: 42.6 t ADT: 53

CONNECTOR ROAD

Good

Over: NSA PERIMETER ROAD

2.0 MILES FROM MD ROUTE 1, Anne Arundel, MD

Built 1988 Load: 42.6 t ADT: 14,000

MD 43 WB

Good

Over: I-95

I-95 Mile Marker 67.2, Baltimore, MD

Built 2014 Load: 42.6 t ADT: 9,927

U.S. ROUTE 301

Good

Over: POTOMAC RIVER

ON VIRGINIA LINE, Charles, MD

Built 2022 Load: 42.8 t ADT: 18,550

MOUNTAIN ROAD

Good

Over: IS 68

AT IS 68, Allegany, MD

Built 1968 Load: 43.1 t ADT: 999

MD 404

Good

Over: TUCKAHOE CREEK

ON QUEEN ANNES CO LINE, Caroline, MD

Built 2016 Load: 43.1 t ADT: 20,442

MD 194

Good

Over: BIG PIPE CREEK

0.64 MILE NORTH OF MD 77, Carroll, MD

Built 2005 Load: 43.1 t ADT: 5,152

US 15 NBR

Good

Over: MD 26

0.15 MILE NORTH OF MD 26, Frederick, MD

Built 2018 Load: 43.1 t ADT: 42,640

MD 5 NB

Good

Over: MD 223

2.83 MILES S OF MD 337, Prince George's, MD

Built 1992 Load: 43.1 t ADT: 97,872

MD 5 SB

Good

Over: MD 223

2.83 MILES S OF MD 337, Prince George's, MD

Built 1992 Load: 43.1 t ADT: 97,872

US 50 WB

Good

Over: US 13

3.197 MILES W OF US 50BU, Wicomico, MD

Built 2001 Load: 43.1 t ADT: 18,971

ALLENDER ROAD

Good

Over: CSX RAILROAD

0.3 MI NW PULASKI HWY, Baltimore, MD

Built 1998 Load: 43.1 t ADT: 5,607

HARFORD ROAD

Good

Over: HERRING RUN

0.25 MI S ARGONNE DRIVE, Baltimore city, MD

Built 1911 Load: 43.1 t ADT: 20,994

GREENMOUNT CHURCH

Good

Over: MURPHY RUN

0.3 MILES EAST OF MD 30, Carroll, MD

Built 2010 Load: 43.1 t ADT: 705

SAMS CREEK ROAD

Good

Over: SAMS CREEK

0.45 MI E OF MD RTE 31, Frederick, MD

Built 1987 Load: 43.1 t ADT: 412

FOUR SEASONS DRIVE

Good

Over: TRIBUTARY TO HA HA BRANC

0.03 MILES W OF MD 7, Harford, MD

Built 2005 Load: 43.1 t ADT: 595

SOUTH ENTRANCE ROA

Good

Over: LITTLE PATUXENT RIVER

0.08 MILE WEST OF US 29, Howard, MD

Built 2004 Load: 43.1 t ADT: 4,200

CASTLEBRIDGE ROAD

Good

Over: UNNAMED STREAM

400 N OF HOMEWOOD RD, Howard, MD

Built 1995 Load: 43.1 t ADT: 50

MD 200 (ICC) WB

Good

Over: Northwest Branch

1.40 Mi West of MD650, Montgomery, MD

Built 2010 Load: 43.1 t ADT: 32,683

VAN BUREN STREET

Good

Over: CSX RAILROAD

0.1 MILES N. OF RIVERTECH, Prince George's, MD

Built 2017 Load: 43.4 t ADT: 3,000

S SPRINGFIELD ROAD

Good

Over: BURCH BRANCH

.2 MI S OF FLORAL PARK RD, Prince George's, MD

Built 2016 Load: 43.4 t ADT: 1,924

US 40 SCN

Good

Over: IS 68

0.59 MI E OF MD 144, Allegany, MD

Built 1990 Load: 43.5 t ADT: 284

MD 43 RAMP 3

Good

Over: TRIB TO WHITEMARSH RUN

RAMP TO MD 7, Baltimore, MD

Built 1996 Load: 43.5 t ADT: 7,440

MD 328

Good

Over: TUCKAHOE CREEK

ON TALBOT CO LINE, Caroline, MD

Built 2012 Load: 43.5 t ADT: 6,500

MD 24 NB

Good

Over: OTTERS POINT CREEK

0.1 MILE NORTH OF US 40, Harford, MD

Built 1996 Load: 43.5 t ADT: 20,242

MD 165

Good

Over: BR OF WEST BRANCH

0.97 MILE NORTH OF MD 152, Harford, MD

Built 2004 Load: 43.5 t ADT: 7,471

BROKEN LAND PKWY

Good

Over: LITTLE PATUXENT RIVER

0.31 MI S OF US 29, Howard, MD

Built 1992 Load: 43.5 t ADT: 32,730

MD 28

Good

Over: BATCHELLORS RUN

0.65 MILE WEST OF MD 182, Montgomery, MD

Built 1999 Load: 43.5 t ADT: 24,340

MD 109

Good

Over: BR OF LITTLE MONOCACY RI

1.74 M S OFCOMUS ROAD, Montgomery, MD

Built 2003 Load: 43.5 t ADT: 1,732

MD 214 WBR

Good

Over: US 301 NBR

0.34 MILE WEST OF MD 978B, Prince George's, MD

Built 1959 Load: 43.5 t ADT: 7,331

MD 67

Good

Over: US 340

0.24 MILE SOUTH OF MD 67D, Washington, MD

Built 1969 Load: 43.5 t ADT: 5,202

US 113 NB

Good

Over: MD 589

0.286 MILE N OF MD 575A, Worcester, MD

Built 2001 Load: 43.5 t ADT: 14,192

US 113 SB

Good

Over: MD 589

0.286 MILE N OF MD 575A, Worcester, MD

Built 2001 Load: 43.5 t ADT: 14,192

PADONIA ROAD

Good

Over: GOODWIN RUN

0.3 MI W OF MD RTE 45, Baltimore, MD

Built 1961 Load: 43.5 t ADT: 47,071

HAMBURG STREET

Good

Over: MTA LIGHT RAIL MARC &

0.8 MI. N. OF I 95, Baltimore city, MD

Built 1991 Load: 43.5 t ADT: 6,332

SAMS CREEK ROAD

Good

Over: SAMS CREEK

ON FREDERICK CO LINE, Carroll, MD

Built 1986 Load: 43.5 t ADT: 362

NEWPORT ROAD

Good

Over: GILLIS FALLS

0.09 MI N OF HOWARD CO, Carroll, MD

Built 2001 Load: 43.5 t ADT: 86

BALLENGER CREEK PI

Good

Over: STORMWATER CHANNEL RELIE

2.27 MI. SOUTH OF I-70, Frederick, MD

Built 2012 Load: 43.5 t ADT: 2,462

SUSQUEHANNA HALL R

Good

Over: DEEP RUN

0.7 MILES S OF MD 623, Harford, MD

Built 1973 Load: 43.5 t ADT: 101

FATHER HURLEY BOUL

Good

Over: CENTURY BOULEVARD

0.2 MI SW OF JCT I-270, Montgomery, MD

Built 1995 Load: 43.5 t ADT: 14,319

FATHER HURLEY BOUL

Good

Over: CENTURY BOULEVARD

0.2 MI SW OF JCT I-270, Montgomery, MD

Built 1995 Load: 43.5 t ADT: 13,713

MCINTOSH ROAD

Good

Over: MCINTOSH RUN

0.9 MI N OF MD RTE 245, St. Mary's, MD

Built 1984 Load: 43.5 t ADT: 2,500

OLD FORGE ROAD

Good

Over: ANTIETAM CREEK

1.2 MI W OF MD RTE 62, Washington, MD

Built 1863 Load: 43.5 t ADT: 580

Ramp EN

Good

Over: MD 200 (ICC) US29 Rp SE

MD200EB Ramp EN to US29NB, Montgomery, MD

Built 2011 Load: 43.5 t ADT: 5,902

MD 86

Good

Over: SOUTH BR GUNPOWDER FALLS

0.97 MI S OF PA LINE, Carroll, MD

Built 2020 Load: 43.7 t ADT: 4,337

IS 270

Good

Over: MD 85 (Buckeystown Pike)

1.0 N OF BR NO 1007400, Frederick, MD

Built 2020 Load: 43.7 t ADT: 111,550

Showing 4,051-4,100 of 5,484 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
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.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

What to do with this

Use Maryland's inventory picture to drill to a county or a specific span.

  • Browse counties in Maryland and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Maryland Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.