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

AUTH RD

Fair

Over: IS 95

0.53 MILE NORTH OF MD 337, Prince George's, MD

Built 1963 Load: 45.8 t ADT: 8,105

MD 18V (CHESTER RI

Fair

Over: US 50/301

0.24 MILE NORTH OF MD 18B, Queen Anne's, MD

Built 1990 Load: 45.8 t ADT: 199

MD 845A

Fair

Over: LITTLE ANTIETAM CREEK

0.56 MILE NORTH OF MD 34, Washington, MD

Built 1927 Load: 45.8 t ADT: 490

MD 60

Fair

Over: ANTIETAM CREEK

0.66 MILE WEST OF MD 62, Washington, MD

Built 1941 Load: 45.8 t ADT: 9,902

IS 70 EB

Fair

Over: IS 68 RAMP D

0.09 MILE WEST OF US 522A, Washington, MD

Built 1965 Load: 45.8 t ADT: 19,000

IS 70 EB

Fair

Over: LICKING CREEK CO ROAD

0.27 MILE EAST OF US 40, Washington, MD

Built 1965 Load: 45.8 t ADT: 23,201

US 13 BUS SB

Fair

Over: NORFOLK SOUTHERN RR

1.0 MILE NORTH OF US 50BU, Wicomico, MD

Built 1951 Load: 45.8 t ADT: 16,405

US 113 NB

Fair

Over: CORKERS CREEK

1.80 MILES S OF US 113BU, Worcester, MD

Built 1971 Load: 45.8 t ADT: 3,644

MASEMORE ROAD

Fair

Over: BUSH CABIN RUN

1.4 MI N OF MT CARMEL RD, Baltimore, MD

Built 1910 Load: 45.8 t ADT: 275

MONROE STREET

Fair

Over: B&O MUSEUM RR

MONROE ST & MT CLARE MANS, Baltimore city, MD

Built 1993 Load: 45.8 t ADT: 17,281

CHILDS ROAD

Fair

Over: LITTLE ELK CREEK

0.55 MI NE OF MD 545, Cecil, MD

Built 1946 Load: 45.8 t ADT: 964

HARNEY ROAD

Fair

Over: PINEY CREEK

0.60 MI N OF MD 140, Carroll, MD

Built 1958 Load: 45.8 t ADT: 2,818

DUNLOGGIN ROAD

Fair

Over: PLUMTREE BRANCH

0.5 MI W OF ST JOHNS LANE, Howard, MD

Built 1965 Load: 45.8 t ADT: 1,621

WESTLAKE TERRACE-F

Fair

Over: I-270

1 MI N OF DEMOCRACY BLVD, Montgomery, MD

Built 1994 Load: 45.8 t ADT: 13,584

CASH CORNER ROAD

Fair

Over: JOHNSON CREEK

0.35 MILES EAST OF MD 667, Somerset, MD

Built 1998 Load: 45.8 t ADT: 356

I-895 NB

Fair

Over: TRANSWAY ROAD

I-895 NB Milepost 3.28, Baltimore, MD

Built 1957 Load: 45.8 t ADT: 7,507

I-895 SB

Fair

Over: TRANSWAY ROAD

I-895 SB Milepost 3.28, Baltimore, MD

Built 1957 Load: 45.8 t ADT: 8,846

IS 95 SB

Fair

Over: MTA LIGHT RAIL AND STORA

I-95 / I-395 INTERCHANGE, Baltimore city, MD

Built 1977 Load: 45.8 t ADT: 89,029

I-95

Fair

Over: AMTRAK RR

Milepost M109.2, Cecil, MD

Built 1962 Load: 45.8 t ADT: 64,281

IS 695

Fair

Over: MD 168

0.38 MI N OF MD 295, Anne Arundel, MD

Built 1958 Load: 46.3 t ADT: 128,182

MD 100 EBR

Fair

Over: MD 2

0.16 W OF BR NO 0208000, Anne Arundel, MD

Built 1963 Load: 46.3 t ADT: 12,651

CATHERINE AVENUE

Fair

Over: MD 100

1.35 MI N OF MD 10, Anne Arundel, MD

Built 1971 Load: 46.3 t ADT: 19,680

US 40

Fair

Over: WHITEMARSH RUN

0.67 MILE WEST OF MD 43, Baltimore, MD

Built 1935 Load: 46.3 t ADT: 29,100

IS 83

Fair

Over: BUFFALO CREEK

2.80 MI S OF MD 137, Baltimore, MD

Built 1955 Load: 46.3 t ADT: 64,381

IS 695 RAMP E

Fair

Over: MD 122 RAMP M

0.39 MI N OF IS 70, Baltimore, MD

Built 1965 Load: 46.3 t ADT: 38,070

MD 7

Fair

Over: MD 695

0.27 MILE NORTH OF MD 588, Baltimore, MD

Built 1958 Load: 46.3 t ADT: 35,080

IS 795

Fair

Over: IS 795 RAMP 1

@ MD 140, Baltimore, MD

Built 1985 Load: 46.3 t ADT: 55,810

IS 195 EBR

Fair

Over: IS 895

0.38 MI N OF AA CO LINE, Baltimore, MD

Built 1987 Load: 46.3 t ADT: 39,015

MD 85

Fair

Over: BALLENGER CREEK

1.3 MILES SOUTH OF IS 270, Frederick, MD

Built 1926 Load: 46.3 t ADT: 17,450

US 15 NBR

Fair

Over: WEST SEVENTH ST

1.28 MILES NORTH OF US 40, Frederick, MD

Built 1958 Load: 46.3 t ADT: 83,230

IS 70 EBR

Fair

Over: MONUMENT ROAD

1.59 MILES E OF WASH CO, Frederick, MD

Built 1968 Load: 46.3 t ADT: 83,710

US 219

Fair

Over: BEAR CR/FISH HATCHERY RD

.78 MILE NORTH OF US 219C, Garrett, MD

Built 2000 Load: 46.3 t ADT: 4,402

IS 68/US 219 EB

Fair

Over: SHADE HOLLOW ROAD

0.61 MILE WEST OF MD 495, Garrett, MD

Built 1975 Load: 46.3 t ADT: 17,530

IS 68/US 219 WB

Fair

Over: SHADE HOLLOW ROAD

0.61 MILE WEST OF MD 495, Garrett, MD

Built 1975 Load: 46.3 t ADT: 17,530

MD 201 NB

Fair

Over: US 50

0.33 MILE SOUTH OF MD 459, Prince George's, MD

Built 1957 Load: 46.3 t ADT: 32,080

US 301 NB

Fair

Over: WESTERN BRANCH

0.12 MILE S OF MD 976C, Prince George's, MD

Built 1959 Load: 46.3 t ADT: 35,812

US 40

Fair

Over: BEAVER CREEK

0.67 MILE WEST OF MD 66, Washington, MD

Built 1936 Load: 46.3 t ADT: 10,742

IS 70 EB

Fair

Over: ASHTON RD

0.76 MILE EAST OF MD 68, Washington, MD

Built 1965 Load: 46.3 t ADT: 40,770

US 50 WB

Fair

Over: BARREN CREEK

0.26 MILE EAST OF MD 313, Wicomico, MD

Built 1950 Load: 46.3 t ADT: 25,871

CASH VALLEY ROAD

Fair

Over: UNNAMED STREAM

0.21 MI N OF US 40 ALT, Allegany, MD

Built 1966 Load: 46.3 t ADT: 3,430

GLEN ARM ROAD

Fair

Over: HAYSTACK BRANCH

0.6 MI W OF HARFORD RD, Baltimore, MD

Built 1976 Load: 46.3 t ADT: 7,740

WASHINGTON BOULEVA

Fair

Over: GWYNNS FALLS

0.5 MI W MONROE ST, Baltimore city, MD

Built 1975 Load: 46.3 t ADT: 16,525

BAILIFF ROAD

Fair

Over: STONY RUN

0.97 MI S OF THEODORE RD, Cecil, MD

Built 1950 Load: 46.3 t ADT: 219

HALTER ROAD

Fair

Over: BIG PIPE CREEK

0.12 MI N OF STUDY RD, Carroll, MD

Built 1966 Load: 46.3 t ADT: 669

PEPPER ROAD

Fair

Over: FAULKNER BRANCH

0.8 MILES NORTH OF MD 318, Caroline, MD

Built 1994 Load: 46.3 t ADT: 342

CASHELL ROAD

Fair

Over: WILLIAMSBURG RUN

0.9 MI S OF BOWIE MILL RD, Montgomery, MD

Built 1972 Load: 46.3 t ADT: 6,159

BALTIMORE LANE

Fair

Over: FOLLY BRANCH

0.29 MI N OF MD 450, Prince George's, MD

Built 1998 Load: 46.3 t ADT: 990

KERBY HILL ROAD SE

Fair

Over: CAREY BRANCH

0.10 MI W OF MD 210, Prince George's, MD

Built 1948 Load: 46.3 t ADT: 1,518

BROADFORDING ROAD

Fair

Over: LITTLE CONOCOCHEAGUE CRK

1.59 MI N OF US RTE 40, Washington, MD

Built 1972 Load: 46.3 t ADT: 868

JOH AVENUE

Fair

Over: IS 95

0.41 MI S OF CATON AVE, Baltimore city, MD

Built 1971 Load: 46.3 t ADT: 1,381

Showing 2,001-2,050 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.