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

US 50

Fair

Over: MD 2/MD 450

1.66 M E OF IS 595, Anne Arundel, MD

Built 1953 Load: 52.6 t ADT: 95,083

MD 702 EBR

Fair

Over: MACE AVENUE

0.29 MILE EAST OF MD 695, Baltimore, MD

Built 1970 Load: 52.6 t ADT: 18,644

MD 695 OL

Fair

Over: KELSO DRIVE

0.02 MILE SOUTH OF MD 702, Baltimore, MD

Built 1969 Load: 52.6 t ADT: 96,082

MD 313

Fair

Over: CHAPEL BRANCH

0.5 MILE NORTH OF MD 317, Caroline, MD

Built 1954 Load: 52.6 t ADT: 7,160

MD 77

Fair

Over: HUNTING CREEK

0.29 MILE WEST OF US 15, Frederick, MD

Built 1970 Load: 52.6 t ADT: 4,351

MD 180

Fair

Over: IS 70

0.49 MILE WEST OF US 15, Frederick, MD

Built 1968 Load: 52.6 t ADT: 3,850

US 15 NBR

Fair

Over: TOMS CREEK

0.65 MILE N OF US 15BU, Frederick, MD

Built 1980 Load: 52.6 t ADT: 18,340

MD 333

Fair

Over: PEACHBLOSSOM CREEK

1.95 MILES S OF MD 322, Talbot, MD

Built 1997 Load: 52.6 t ADT: 7,672

PITTSBURGH PG ROAD

Fair

Over: CSXT / LOCKHOUSE RD

0.23 MI NW OF MD 51, Allegany, MD

Built 1957 Load: 52.6 t ADT: 2,085

CARROLL ISLAND ROA

Fair

Over: SALTPETER CREEK

2.4 MI E EASTERN AVE, Baltimore, MD

Built 1960 Load: 52.6 t ADT: 10

PADONIA ROAD

Fair

Over: MTA LIGHT RAIL

0.4 MI W OF YORK RD, Baltimore, MD

Built 1961 Load: 52.6 t ADT: 40,537

PRESTON STREET

Fair

Over: I-83 AND ABANDONED RAILR

0.3 MI N MD STATE PEN, Baltimore city, MD

Built 1959 Load: 52.6 t ADT: 18,200

NB I83 TO EB NPKWY

Fair

Over: JONES FALLS

NB I-83 OFF RAMP, Baltimore city, MD

Built 1959 Load: 52.6 t ADT: 25,771

UNION AVENUE

Fair

Over: JONES FALLS

0.2 MI S 41ST ST, Baltimore city, MD

Built 1960 Load: 52.6 t ADT: 4,766

LEEDS ROAD

Fair

Over: LITTLE ELK CREEK

0.5 MI NE OF MD 545, Cecil, MD

Built 1967 Load: 52.6 t ADT: 2,203

WOODBINE ROAD

Fair

Over: SOUTH BRANCH PATAPSCO RI

ON HOWARD CO LINE, Carroll, MD

Built 1976 Load: 52.6 t ADT: 8,182

I-895 B

Fair

Over: I-895

I-895SB Milepost (B2.2), Anne Arundel, MD

Built 1957 Load: 52.6 t ADT: 17,263

I-895 NB

Fair

Over: MD 648

I-895 NB Milepost 4.9, Baltimore, MD

Built 1957 Load: 52.6 t ADT: 18,501

I-895

Fair

Over: MDTA BHT MAINTENANCE FAC

Milepost M8.06, Baltimore city, MD

Built 1957 Load: 52.6 t ADT: 82,953

MD 151 SBR

Fair

Over: MD 150

0.21 M S OF CONLEY STREET, Baltimore, MD

Built 1942 Load: 53.1 t ADT: 23,941

MD 151 NBR

Fair

Over: MD 150

0.21 M S OF CONLEY STREET, Baltimore, MD

Built 1942 Load: 53.1 t ADT: 23,941

IS 695 RAMP G IL

Fair

Over: IS 70 RAMPS B & F

@ I-695 & I-70 INTERCHANG, Baltimore, MD

Built 1966 Load: 53.1 t ADT: 25,300

IS 795 NBR

Fair

Over: GWYNNS FALLS

0.32 MILE NORTH OF IS 695, Baltimore, MD

Built 1984 Load: 53.1 t ADT: 110,982

MD 313

Fair

Over: CHOPTANK RIVER

0.32 MILE NORTH OF MD 314, Caroline, MD

Built 1949 Load: 53.1 t ADT: 8,230

IS 70 EBR

Fair

Over: HOLLOW ROAD

0.1 M W OF RIDGE ROAD, Frederick, MD

Built 1968 Load: 53.1 t ADT: 68,230

IS 70 EBR

Fair

Over: IS 70 RAMP E

0.28 MILE WEST OF US 40AL, Frederick, MD

Built 1969 Load: 53.1 t ADT: 68,800

IS 68

Fair

Over: BUFFALO RUN

1.27 MILES E OF W VA, Garrett, MD

Built 1975 Load: 53.1 t ADT: 14,341

MD 24

Fair

Over: BR OF DEER CREEK

0.09 M N OF COEN ROAD, Harford, MD

Built 1986 Load: 53.1 t ADT: 3,193

MD 32 RAMP 9

Fair

Over: US 1

1.50 MILES N OF AA CO, Howard, MD

Built 1983 Load: 53.1 t ADT: 15,788

MD 32 RAMP 10

Fair

Over: US 1

1.50 MILES N OF AA CO, Howard, MD

Built 1983 Load: 53.1 t ADT: 9,852

IS 495X SB

Fair

Over: CABIN JOHN CREEK

0.02 MILE SOUTH OF GV 6, Montgomery, MD

Built 1964 Load: 53.1 t ADT: 22,160

MD 212

Fair

Over: IS 495 OL

.0036 M N OF IS 496, Prince George's, MD

Built 1964 Load: 53.1 t ADT: 17,211

IS 95X SB

Fair

Over: IS 495 RAMP A

0.15 M S OF BR NO 1612200, Prince George's, MD

Built 1987 Load: 53.1 t ADT: 3,760

IS 595 RAMP C(9)

Fair

Over: IS 95 & RPS A B COBB RD

0.54 MI S OF MD 450, Prince George's, MD

Built 1988 Load: 53.1 t ADT: 4,145

US 301 SB

Fair

Over: CHESTER RIVER

ON KENT CO LINE, Queen Anne's, MD

Built 1967 Load: 53.1 t ADT: 10,370

MD 333

Fair

Over: TRIPPE CREEK

0.67 M N OF SPRING ROAD, Talbot, MD

Built 1998 Load: 53.1 t ADT: 7,672

BOYD ROAD

Fair

Over: IS 70 EBR

3.04 MI N OF MD 56, Washington, MD

Built 1965 Load: 53.1 t ADT: 1,392

MD 68

Fair

Over: IS 70

0.47 MILE EAST OF US 40, Washington, MD

Built 1965 Load: 53.1 t ADT: 2,773

WATERCLIFF STREET

Fair

Over: HILL RUN

0.01 MI S OF WATER STA RD, Allegany, MD

Built 1955 Load: 53.1 t ADT: 161

NORTH WIND ROAD

Fair

Over: JENNIFER BRANCH

0.6 MI E HARFORD RD, Baltimore, MD

Built 1973 Load: 53.1 t ADT: 11,862

I-83 SOUTHBOUND

Fair

Over: CENTRE STREET & MADISON

0.1 MI N OF ORLEANS ST, Baltimore city, MD

Built 1976 Load: 53.1 t ADT: 77,003

BLOOMINGDALE ROAD

Fair

Over: CSX

BLOOMINGDALE RD OVER CSX, Baltimore city, MD

Built 1990 Load: 53.1 t ADT: 7,443

JANNEY STREET

Fair

Over: EASTERN AVENUE

EASTERN AV UNDR JANNEY ST, Baltimore city, MD

Built 1930 Load: 53.1 t ADT: 36,467

WATERSVILLE ROAD

Fair

Over: HAY MEADOW BRANCH

1 MI N OLD FREDERICK RD, Howard, MD

Built 1935 Load: 53.1 t ADT: 539

RILEYS NECK ROAD

Fair

Over: TRIB. TO CYPRESS CREEK

0.05 MI N OF MD RTE 291, Kent, MD

Built 1992 Load: 53.1 t ADT: 114

PEACH ORCHARD ROAD

Fair

Over: PAINT BRANCH

.5 M N OF BRIGGS CHANEY R, Montgomery, MD

Built 1990 Load: 53.1 t ADT: 3,677

BRIGHTON DAM ROAD

Fair

Over: BRIGHTON DAM & TRIADELPH

1 MILE EAST OF MD 650, Montgomery, MD

Built 1944 Load: 53.1 t ADT: 7,106

PLANTATION DRIVE

Fair

Over: TRIBUTARY OF ANTIETAM CR

0.5 MI N OF EAST RIDGE DR, Washington, MD

Built 1996 Load: 53.1 t ADT: 1,136

BURHANS BOULEVARD

Fair

Over: NORFOLK SOUTHERN RAILROA

0.47 MI N OF VIRGINIA AVE, Washington, MD

Built 1962 Load: 53.1 t ADT: 11,223

BRIDGE STREET

Fair

Over: BARREN CREEK

0.13 MI N OF ATHOL ROAD, Wicomico, MD

Built 1972 Load: 53.1 t ADT: 792

Showing 2,401-2,450 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.