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)

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.

All Bridges in Maryland

NEW FORGE ROAD

Good

Over: TRIBUTARY TO GUNPOWDER F

0.3 MI W OF JCT SR 7, Baltimore, MD

Built 1963 Load: 32.7 t ADT: 2,500

US 40 EDMONDSON AV

Good

Over: GWYNNS FALLS CSX

0.2 MI E HILTON PKWY, Baltimore city, MD

Built 1907 Load: 32.7 t ADT: 3,900

NORTHERN PARKWAY

Good

Over: POWDER MILL RUN

NORTHERN PKWY/POWDER MILL, Baltimore city, MD

Built 1965 Load: 32.7 t ADT: 31,395

PULASKI HIGHWAY

Good

Over: MOORES RUN

PULASKI HY OV MOORES RUN, Baltimore city, MD

Built 1971 Load: 32.7 t ADT: 52,411

LANCASTER ST. AT C

Good

Over: HARFORD RUN

LANCASTER ST AT CENTRAL A, Baltimore city, MD

Built 1985 Load: 32.7 t ADT: 5,650

WASHINGTON BOULEVA

Good

Over: CSX

0.7MI NE OF PATAPSCO AVE, Baltimore city, MD

Built 1979 Load: 32.7 t ADT: 20,691

OLD ELK NECK ROAD

Good

Over: MILL CREEK

0.46 MI S OF US 40, Cecil, MD

Built 1980 Load: 32.7 t ADT: 4,054

BOHEMIA CHURCH ROA

Good

Over: LITTLE BOHEMIA CREEK

3.1 MI E OF MD-213, Cecil, MD

Built 2018 Load: 32.7 t ADT: 500

PERRYVILLE COMMUNI

Good

Over: MILL CREEK

.3 MILES SE OF MD 7, Cecil, MD

Built 1989 Load: 32.7 t ADT: 124

BALLENGER CREEK PI

Good

Over: PIKE BRANCH

0.27 MI S OF CRESTWOOD BD, Frederick, MD

Built 2003 Load: 32.7 t ADT: 14,501

CARRIAGE HILL DRIV

Good

Over: TRIBUTARY OF PETER PAN R

0.8 Mi N of Fingerboard R, Frederick, MD

Built 2004 Load: 32.7 t ADT: 580

BILL MOXLEY ROAD

Good

Over: BUSH CREEK

AT MD 144 INTERSECTION, Frederick, MD

Built 1973 Load: 32.7 t ADT: 2,017

LITTLE ROAD

Good

Over: DEEP RUN

0.6 MILES N OF DEEP RUN R, Harford, MD

Built 1980 Load: 32.7 t ADT: 31

ROVER MILL ROAD

Good

Over: MIDDLE PATUXENT RIVER

0.6 Mile E of McEndree Rd, Howard, MD

Built 1970 Load: 32.7 t ADT: 100

TOLL HOUSE ROAD

Good

Over: HUDSON BRANCH

30 FT S OF FREDERICK RD, Howard, MD

Built 1967 Load: 32.7 t ADT: 200

SWIMMER ROW WAY

Good

Over: TRIB MIDDLE PATUXENT R

200 ft East of S Trotter, Howard, MD

Built 2000 Load: 32.7 t ADT: 50

HESPERUS DRIVE

Good

Over: TRIB TO WILDE LAKE

1/4 MI SOUTH OF MD 108, Howard, MD

Built 1972 Load: 32.7 t ADT: 50

ELLICOTT WOODS LN

Good

Over: TRIB TO BONNIE BR

At Worthington Way, Howard, MD

Built 1990 Load: 32.7 t ADT: 50

THUNDER HILL ROAD

Good

Over: UNNAMED STREAM

1/8 MI S of MD 108, Howard, MD

Built 1972 Load: 32.7 t ADT: 200

OLD STOCKBRIDGE DR

Good

Over: DEEP RUN

1/8 MI W of MD 103, Howard, MD

Built 1972 Load: 32.7 t ADT: 300

POTOMAC CREST DRIV

Good

Over: SNAKEDEN BRANCH

1 MILE WEST OF I-270, Montgomery, MD

Built 1995 Load: 32.7 t ADT: 513

SEAN TAYLOR ROAD

Good

Over: TRIB TO CATTAIL BRANCH

1.0 M WEST OF I-495, Prince George's, MD

Built 1994 Load: 32.7 t ADT: 10,041

FORBES BOULEVARD

Good

Over: TRIB TO FOLLY BRANCH

0.5 M NORTH OF MD 450, Prince George's, MD

Built 1999 Load: 32.7 t ADT: 4,585

McCORMICK DRIVE

Good

Over: UNNAMED STREAM

0.5 MI SOUTH OF MD 202, Prince George's, MD

Built 1982 Load: 32.7 t ADT: 9,830

SUMMERSWEET DRIVE

Good

Over: TRIB TO PISCATAWAY CREEK

.2 MI W OF BRANDYWINE RD, Prince George's, MD

Built 2006 Load: 32.7 t ADT: 550

WHITE HOUSE ROAD

Good

Over: TRIB TO THERESA CREEK

0.92 MI E OF I-95, Prince George's, MD

Built 1996 Load: 32.7 t ADT: 22,859

ALLEN ROAD

Good

Over: SOMERSET CREEK

1.2 MILES NW OF US 13, Somerset, MD

Built 2002 Load: 32.7 t ADT: 609

HOPEWELL ROAD

Good

Over: TRIBUTARY OF SEMPLE RUN

0.34 MI NE OF US RTE 11, Washington, MD

Built 1964 Load: 32.7 t ADT: 7,648

GOVERNOR LANE BOUL

Good

Over: TRIBUTARY OF CONOCOCHEAG

0.3 MI N OF MD RTE 68, Washington, MD

Built 1972 Load: 32.7 t ADT: 7,589

NORTH HAWBAKER CIR

Good

Over: TOMS RUN

0.09 MI. W. OF N MILL ST., Washington, MD

Built 1977 Load: 32.7 t ADT: 56

BEAGLIN PARK DRIVE

Good

Over: BEAVERDAM CREEK

1 MI S OF GLEN AVE, Wicomico, MD

Built 1975 Load: 32.7 t ADT: 1,176

BEAGLIN PARK DRIVE

Good

Over: MIDDLE NECK BRANCH

0.05 MI N of MD 12, Wicomico, MD

Built 2008 Load: 32.7 t ADT: 1,229

QUEPONCO ROAD

Good

Over: OLD MILL BRANCH

3.79 MI N OF US RTE 113, Worcester, MD

Built 1994 Load: 32.7 t ADT: 130

WEST ENTRANCE

Good

Over: TRIB OF GWYNNS FALLS

MILFORD MILL METRO, Baltimore, MD

Built 1986 Load: 32.7 t ADT: 300

I-95

Good

Over: SWAN CREEK

Milepost M86.0, Harford, MD

Built 1963 Load: 32.7 t ADT: 100,386

PERIMETER PATROL R

Good

Over: PAINT BRANCH

800 FT SW OF FLORAL DRIVE, Prince George's, MD

Built 1969 Load: 32.7 t ADT: 5

MD 464

Good

Over: CATOCTIN CREEK

3.17 MILES EAST OF MD 17, Frederick, MD

Built 2010 Load: 33.0 t ADT: 4,040

RIVER ROAD

Good

Over: C&O CANAL

0.19 MI S OF PPG RD, Allegany, MD

Built 2014 Load: 33.0 t ADT: 105

SPOOKS HILL ROAD

Good

Over: COOPERS RUN

0.8 MI E BECKLEYSVILLE RD, Baltimore city, MD

Built 2016 Load: 33.0 t ADT: 110

MD 26

Good

Over: ISRAEL CREEK

0.66 MILE EAST OF MD 194, Frederick, MD

Built 2000 Load: 33.1 t ADT: 10,092

EXECUTIVE WAY

Good

Over: BALLENGER CREEK

0.1 MI WEST OF MD 85, Frederick, MD

Built 2007 Load: 33.1 t ADT: 6,345

GAME PRESERVE ROAD

Good

Over: WHETSTONE RUN

0.2 MI NORTH OF MD 355, Montgomery, MD

Built 1990 Load: 33.1 t ADT: 1,982

IS 95 SB

Good

Over: BOSTON ST ODONNELL S

AT EXIT 57, Baltimore city, MD

Built 1980 Load: 33.1 t ADT: 64,724

IS 695

Good

Over: US 1 AMTRAK LEEDS AVE

0.65 MILE NORTH OF IS 95, Baltimore, MD

Built 2004 Load: 33.4 t ADT: 197,216

MD 546

Good

Over: IS 68

0.08 MILE S OF MD 546F, Garrett, MD

Built 1973 Load: 33.4 t ADT: 1,600

GREENCASTLE ROAD

Good

Over: LITTLE PAINT BRANCH

0.10 MI E OF MONT CO LINE, Prince George's, MD

Built 1955 Load: 33.4 t ADT: 6,491

US 40 WB

Good

Over: IS 70

US 40 @ IS 70, Howard, MD

Built 1968 Load: 33.6 t ADT: 6,355

FREDERICK AVE

Good

Over: GWYNNS FALLS CSX

0.6 MI E HILTON PKWY, Baltimore city, MD

Built 1930 Load: 33.6 t ADT: 18,410

MONROE STREET VIAD

Good

Over: CSX RAILROAD

0.1 MI NW OF I-95, Baltimore city, MD

Built 1955 Load: 33.6 t ADT: 12,000

WEST CREEK VILLAGE

Good

Over: WEST BRANCH OF CHRISTINA

0.3 MI NORTH OF MD 277, Cecil, MD

Built 2008 Load: 33.6 t ADT: 3,184

Showing 3,651-3,700 of 5,484 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.

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.