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

FRICKS CROSSING RO

Fair

Over: LITTLE YOUGHIOGHENY RIVE

0.6 M N INT GARRETT RD, Garrett, MD

Built 2000 Load: 16.3 t ADT: 138

WHITAKER MILL ROAD

Fair

Over: WINTERS RUN

1.8 MILES W OF US 1, Harford, MD

Built 1991 Load: 16.3 t ADT: 3,051

MADONNA ROAD

Fair

Over: DEER CREEK

0.02 MI S OF TELEGRAPH RD, Harford, MD

Built 1965 Load: 16.3 t ADT: 89

WOODLAWN BOULEVARD

Fair

Over: TRIB TO SOUTHWEST BRANCH

.1 MI N OF WHITE HOUSE RD, Prince George's, MD

Built 1969 Load: 16.3 t ADT: 3,980

HARRY S. TRUMAN DR

Fair

Over: TRIB. TO SOUTHWEST BR.

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

Built 1972 Load: 16.3 t ADT: 17,480

BW PARKWAY (NBL)

Fair

Over: LITTLE PATUXENT RIVER

0.8 MILES SOUTH OF MD ROU, Anne Arundel, MD

Built 1953 Load: 16.3 t ADT: 40,000

BW PARKWAY (SBL)

Fair

Over: LITTLE PATUXENT RIVER

0.8 MILES SOUTH OF MD ROU, Anne Arundel, MD

Built 1953 Load: 16.3 t ADT: 40,000

WOLFSVILLE ROAD

Fair

Over: BEAVER CREEK

0.2 MI S OF MD RTE 844, Washington, MD

Built 1915 Load: 16.7 t ADT: 1,500

MD 674

Fair

Over: GRAYS INN CREEK

0.25 MILE WEST OF MD 20, Kent, MD

Built 1977 Load: 16.8 t ADT: 1,230

RACE ROAD

Fair

Over: STEMMERS RUN

0.14 MI S OF ROSSVIL BLVD, Baltimore, MD

Built 1929 Load: 16.8 t ADT: 1,700

ROSSVILLE BOULEVAR

Fair

Over: BRIEN RUN

0.60 MI S OF US 40, Baltimore, MD

Built 1970 Load: 16.8 t ADT: 22,664

STATION ROAD

Fair

Over: CATOCTIN CREEK

0.5 MI W OF OLD HAGERSTOW, Frederick, MD

Built 1920 Load: 16.8 t ADT: 133

GROVE ROAD

Fair

Over: MILL RUN

0.01 MI S MILL RUN ROAD, Garrett, MD

Built 1986 Load: 16.8 t ADT: 12

FRIENDSHIP ROAD

Fair

Over: OVERSHOT BRANCH

1.0 MILES S OF MD 152, Harford, MD

Built 1975 Load: 16.8 t ADT: 975

Roberts Mill Road

Fair

Over: Maryland Midland Railway

0.1 MI SE OF MD 194, Carroll, MD

Built 1929 Load: 16.8 t ADT: 1,105

OLD MILL ROAD

Fair

Over: OWENS CREEK

0.87 MILES SOUTH OF MD 77, Frederick, MD

Built 1882 Load: 17.2 t ADT: 360

GRIFFITH ROAD

Fair

Over: HAWLINGS RIVER

1 MI W OF JCT SR 650, Montgomery, MD

Built 1920 Load: 17.2 t ADT: 282

MOLLY BERRY ROAD

Fair

Over: MATAPONI CREEK

0.65 MI SW OF MD 382, Prince George's, MD

Built 1967 Load: 17.2 t ADT: 656

MD 45

Fair

Over: WESTERN RUN

0.75 MILE NORTH OF MD 145, Baltimore, MD

Built 1917 Load: 17.7 t ADT: 23,992

MD 213

Fair

Over: BR OF MORGAN CREEK

0.3 M N OF BIG WOOD ROAD, Kent, MD

Built 1955 Load: 17.7 t ADT: 3,381

JOPPA ROAD

Fair

Over: FORMER HUTZLERS DEPARTM

E OF DULANEY VALLEY RD, Baltimore, MD

Built 1951 Load: 17.7 t ADT: 27,568

TULSMERE ROAD

Fair

Over: SCOTTS LEVEL BRANCH

0.4 MI S OF WINANDS RD, Baltimore, MD

Built 1969 Load: 17.7 t ADT: 1,844

CLEARWOOD ROAD

Fair

Over: TRIBUTARY TO HERRING RUN

0.20 MI E OF OAKLEIGH RD, Baltimore, MD

Built 1963 Load: 17.7 t ADT: 100

RINEHART ROAD

Fair

Over: BIG PIPE CREEK

0.62 MI N OF SAW MILL RD, Carroll, MD

Built 1961 Load: 17.7 t ADT: 1,030

SLACKS ROAD

Fair

Over: TRIBUTARY OF PINEY RUN

1.06 MI N RAINCLIFFE ROAD, Carroll, MD

Built 1975 Load: 17.7 t ADT: 905

MASEMORE ROAD

Fair

Over: GUNPOWDER FALLS

0.6 MI SW BUNKER HILL RD, Baltimore, MD

Built 1898 Load: 18.1 t ADT: 344

JENNINGS ROAD

Fair

Over: SOUTH BRANCH CASSELMAN R

0.06 MI E BEAR HILL RD, Garrett, MD

Built 1917 Load: 18.1 t ADT: 207

East Montgomery Ro

Fair

Over: Rockville Center Multipl

0.5 Miles West of Md. 355, Montgomery, MD

Built 1998 Load: 18.1 t ADT: 500

RODMAN AVENUE

Fair

Over: SHERRICKS RUN

0.16km (0.1 MILES) TO ROH, Washington, MD

Built 1965 Load: 18.1 t ADT: 4,300

GRIMES ROAD

Fair

Over: TOMS CREEK

0.5 MILES S OF SIXES ROAD, Frederick, MD

Built 1914 Load: 18.6 t ADT: 170

SIMPSONS MILL ROAD

Fair

Over: LITTLE PIPE CREEK

1.12 MI N OF GOOD INTENT, Frederick, MD

Built 1890 Load: 18.6 t ADT: 200

SNOWDEN RIVER PARK

Fair

Over: ROBERT FULTON DRIVE

1.0 MI S OF MD RTE 175, Howard, MD

Built 1976 Load: 18.6 t ADT: 35,944

BAYSIDE ROAD

Fair

Over: TANHOUSE CREEK

1.29 MI SW OF MD 365, Worcester, MD

Built 1970 Load: 18.6 t ADT: 240

MD 147

Fair

Over: BR OF LONG GREEN CREEK

0.46 MI N OF SHARON DR, Baltimore, MD

Built 1916 Load: 19.0 t ADT: 5,752

MD 28

Fair

Over: BR OF DRY SENECA CREEK

0.98 MILE WEST OF MD 117, Montgomery, MD

Built 1954 Load: 19.0 t ADT: 5,420

MAGOTHY BRIDGE RD

Fair

Over: MAGOTHY RIVER

0.84 MI N OF MD 648D, Anne Arundel, MD

Built 1978 Load: 19.0 t ADT: 19,964

PRINCIPIO ROAD

Fair

Over: PRINCIPIO CREEK

0.12 MI S OF RED TOAD RD, Cecil, MD

Built 1980 Load: 19.0 t ADT: 834

SIXES BRIDGE ROAD

Fair

Over: MONOCACY RIVER

2.5 MI S OF KEYSVILLE RD, Frederick, MD

Built 1910 Load: 19.0 t ADT: 198

CARDEROCK ACCESS C

Fair

Over: CLARA BARTON PARKWAY

0.7 MILES WEST OF MACARTH, Montgomery, MD

Built 1962 Load: 19.0 t ADT: 2,000

BW PARKWAY

Fair

Over: BIG PATUXENT RIVER

0.8 MILES NORTH OF MD ROU, Anne Arundel, MD

Built 1953 Load: 19.0 t ADT: 40,000

SOUTH PALMER ROAD

Fair

Over: PARKING GARAGE

1 KM W OF RT. 185, Montgomery, MD

Built 1980 Load: 19.3 t ADT: 200

MD 128

Fair

Over: MCGILL RUN

3.00 MI W OF MD 25, Baltimore, MD

Built 1929 Load: 19.5 t ADT: 2,991

MD 17

Fair

Over: CATOCTIN CREEK

0.6 M S OF MAERK ROAD, Frederick, MD

Built 1934 Load: 19.5 t ADT: 5,450

MD 978A

Fair

Over: COLLINGTON BRANCH

0.18 MILE WEST OF MD 214, Prince George's, MD

Built 1929 Load: 19.5 t ADT: 2,180

US 13 SB

Fair

Over: US 50

0.37 MILE SOUTH OF MD 346, Wicomico, MD

Built 1973 Load: 19.5 t ADT: 36,390

OREMS ROAD SUNNYS

Fair

Over: TRIBUTARY TO BRIEN RUN

0.1 MI NE OF ROSSVILLE BL, Baltimore, MD

Built 1970 Load: 19.5 t ADT: 5,180

BLOOM ROAD

Fair

Over: MORGAN RUN

250 FT S OF SALEM BOTTOM, Carroll, MD

Built 1980 Load: 19.5 t ADT: 520

BROWN STATION ROAD

Fair

Over: CABIN BRANCH

1.61 MILES N OF MD 725, Prince George's, MD

Built 1964 Load: 19.5 t ADT: 8,974

FLORAL DRIVE

Fair

Over: PAINT BRANCH

0.1 MILES NE N AVE, Prince George's, MD

Built 1975 Load: 19.8 t ADT: 250

WINDY RIDGE DRIVE

Fair

Over: JENNINGS RUN

1.3 MI W OF MD 35, Allegany, MD

Built 1959 Load: 20.0 t ADT: 10

Showing 51-100 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.