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

IS 695

Fair

Over: CROMWELL BRIDGE ROAD

0.17 MILE WEST OF MD 542, Baltimore, MD

Built 1957 Load: 40.8 t ADT: 149,261

MD 45

Fair

Over: FOURTH MINE BRANCH

0.14 M N OF BR NO 0304600, Baltimore, MD

Built 1930 Load: 40.8 t ADT: 5,340

IS 795 RAMP 3

Fair

Over: IS 695 MTA METRO

@ IS 795 & IS 695, Baltimore, MD

Built 1983 Load: 40.8 t ADT: 69,900

MD 2 NB

Fair

Over: HUNTING CREEK

.086 MILE NORTH OF MD 263, Calvert, MD

Built 1969 Load: 40.8 t ADT: 18,785

MD 5 NB

Fair

Over: ZEKIAH SWAMP

0.44 MILE SOUTH OF MD 488, Charles, MD

Built 1966 Load: 40.8 t ADT: 37,490

MD 5 NB

Fair

Over: ZEKIAH SWAMP

0.54 MILE SOUTH OF MD 488, Charles, MD

Built 1966 Load: 40.8 t ADT: 37,490

MD 16

Fair

Over: SLAUGHTER CREEK

AT TAYLORS ISLAND, Dorchester, MD

Built 1998 Load: 40.8 t ADT: 652

PARK MILLS ROAD

Fair

Over: IS 270

0.48 MI S OF MD 355, Frederick, MD

Built 1950 Load: 40.8 t ADT: 742

US 15 SBR

Fair

Over: ROSEMONT AVE

0.77 MILE NORTH OF US 40, Frederick, MD

Built 1968 Load: 40.8 t ADT: 93,930

IS 70 WBR

Fair

Over: OLD NATIONAL PIKE

3.71 MILE WEST OF MD 75, Frederick, MD

Built 1985 Load: 40.8 t ADT: 59,922

US 40

Fair

Over: OTTER POINT CREEK

0.10 MILE EAST OF MD 24, Harford, MD

Built 1935 Load: 40.8 t ADT: 21,093

MD 24 SBR

Fair

Over: CSX TRANS.

0.3 MILE SOUTH OF MD 7, Harford, MD

Built 1970 Load: 40.8 t ADT: 20,242

MD 24

Fair

Over: TRIB. TO OTTER POINT CRE

0.13 MILE NORTH OF MD 755, Harford, MD

Built 1969 Load: 40.8 t ADT: 24,240

MD 103

Fair

Over: DEEP RUN

0.89 MILE SOUTH OF US 1, Howard, MD

Built 1937 Load: 40.8 t ADT: 8,191

US 29 NB

Fair

Over: IS 70

0.44 MILE SOUTH OF MD 99, Howard, MD

Built 1966 Load: 40.8 t ADT: 11,870

MD 32 EB

Fair

Over: IS 95 SBR

1.74 MILES NORTH OF US 1, Howard, MD

Built 1970 Load: 40.8 t ADT: 15,262

US 29 RAMP 7

Fair

Over: US 29 NBR

0.36 MILE SOUTH OF MD 103, Howard, MD

Built 1992 Load: 40.8 t ADT: 11,348

GREENTREE RD

Fair

Over: IS 495

@ IS 495, Montgomery, MD

Built 1962 Load: 40.8 t ADT: 8,600

US 301 SB

Fair

Over: MD 214

0.14 MILES N OF MD 978B, Prince George's, MD

Built 1959 Load: 40.8 t ADT: 27,351

MD 198 WB

Fair

Over: IS 95

1.85 MILES WEST OF MD 216, Prince George's, MD

Built 1971 Load: 40.8 t ADT: 49,801

US 13

Fair

Over: PASSERDYKE CREEK

ON WICOMICO CO LINE, Somerset, MD

Built 1900 Load: 40.8 t ADT: 27,695

MD 822

Fair

Over: LORETTO BRANCH

0.6 MILE EAST OF US 13, Somerset, MD

Built 2002 Load: 40.8 t ADT: 2,000

US 40 ALT

Fair

Over: ANTIETAM CREEK

0.42 M E OF KENLY AVENUE, Washington, MD

Built 1823 Load: 40.8 t ADT: 6,082

MD 494

Fair

Over: CONOCOCHEAGUE CREEK

2.77 MILES EAST OF MD 57, Washington, MD

Built 1932 Load: 40.8 t ADT: 1,494

MD 350

Fair

Over: NASSAWANGO CREEK

4.53 MILES WEST OF MD 354, Wicomico, MD

Built 1931 Load: 40.8 t ADT: 1,910

MD 346

Fair

Over: MD 90

1.34 MILES WEST OF US 50, Worcester, MD

Built 1974 Load: 40.8 t ADT: 1,131

FRENCHTOWN ROAD

Fair

Over: GOOSE CREEK

1.2 MI SE OF RUMBLEY, Somerset, MD

Built 1983 Load: 40.8 t ADT: 64

JEROME JAY DRIVE

Fair

Over: BEAVERDAM RUN BAISMAN R

0.3 MI SE OF IVY HILL RD, Baltimore, MD

Built 1988 Load: 40.8 t ADT: 700

I-83 RAMP C

Fair

Over: GUILFORD AVE

0.4 MI N OF MADISON ST, Baltimore city, MD

Built 1976 Load: 40.8 t ADT: 7,014

ADAMS MILL ROAD

Fair

Over: LITTLE PIPE CREEK

.03 MI E OF ROOPS MILL RD, Carroll, MD

Built 1974 Load: 40.8 t ADT: 75

PLEASANT VIEW RD

Fair

Over: TUSCARORA CREEK

1.14 MI N OF MD RTE 28, Frederick, MD

Built 1982 Load: 40.8 t ADT: 191

UNDERWOOD ROAD

Fair

Over: CHERRY CREEK

0.5 MI N OF MANSFIELD RD, Garrett, MD

Built 1998 Load: 40.8 t ADT: 1,185

GLEN MILL ROAD

Fair

Over: PINEY BRANCH

0.6 MI N OF GLEN RD., Montgomery, MD

Built 1960 Load: 40.8 t ADT: 4,190

MOUTH OF MONOCACY

Fair

Over: CSXT RAILROAD

0.9 MILES WEST OF MD 28, Montgomery, MD

Built 2007 Load: 40.8 t ADT: 300

RIFFLE FORD ROAD

Fair

Over: GREAT SENECA CREEK

1.8 MILES EAST OF MD 118, Montgomery, MD

Built 1952 Load: 40.8 t ADT: 4,131

BEAVER CREEK CHURC

Fair

Over: BEAVER CREEK

0.5 MI W OF MD 66 IS 70IN, Washington, MD

Built 1930 Load: 40.8 t ADT: 168

NEW FORGE ROAD

Fair

Over: I-95

Milepost M69.7, Baltimore, MD

Built 1990 Load: 40.8 t ADT: 2,862

IS 95 VIADUCT NB

Fair

Over: CONRAIL YARDS

Milepost M56.7, Baltimore city, MD

Built 1982 Load: 40.8 t ADT: 60,485

MD 213

Fair

Over: I-95

Milepost M105.9, Cecil, MD

Built 1963 Load: 40.8 t ADT: 9,031

BW PARKWAY (SBL)

Fair

Over: MD ROUTE 197 (WBL)

1.9 MILES NORTH OF MD ROU, Prince George's, MD

Built 2001 Load: 40.8 t ADT: 88,000

IS 895B RAMP

Fair

Over: MD 2

0.55 MILE SOUTH OF MD 695, Anne Arundel, MD

Built 1958 Load: 41.3 t ADT: 21,141

IS 83

Fair

Over: BELFAST ROAD

1.09 MI S OF COLD BOT RD, Baltimore, MD

Built 1955 Load: 41.3 t ADT: 62,891

IS 83 NBR

Fair

Over: SHAWAN ROAD EBR

0.91 MI N OF BEAVERDAM RD, Baltimore, MD

Built 1953 Load: 41.3 t ADT: 33,380

IS 195 WBR

Fair

Over: US 1

0.58 MI N OF AA CO LINE, Baltimore, MD

Built 1987 Load: 41.3 t ADT: 41,831

MD 263

Fair

Over: HUNTING CREEK

0.04 MILE EAST OF MD 2, Calvert, MD

Built 1926 Load: 41.3 t ADT: 7,412

MD 4 SB

Fair

Over: LYONS CREEK

ON ANNE ARUNDEL CO LINE, Calvert, MD

Built 1959 Load: 41.3 t ADT: 46,661

MD 335

Fair

Over: BIRCH DAM CREEK

1.54 MILES SOUTH OF MD 16, Dorchester, MD

Built 1968 Load: 41.3 t ADT: 1,591

IS 70 EBR

Fair

Over: HARMONY RD LITTLE CATOC

1.96 MILES EAST OF MD 17, Frederick, MD

Built 1968 Load: 41.3 t ADT: 69,153

IS 70 WBR

Fair

Over: HARMONY RD LITTLE CATOC

1.96 MILES EAST OF MD 17, Frederick, MD

Built 1968 Load: 41.3 t ADT: 69,153

MD 17

Fair

Over: LITTLE CATOCTIN CREEK

0.03 MI N OF HARMONY RD, Frederick, MD

Built 1920 Load: 41.3 t ADT: 3,046

Showing 1,551-1,600 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.