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

POPLAR GROVE ST

Fair

Over: CSX

0.4 MI S OF NORTH AVE, Baltimore city, MD

Built 1910 Load: 66.2 t ADT: 1,219

I-83 SB TO EB 28TH

Fair

Over: I-83

0.4 MI N OF NORTH AVE, Baltimore city, MD

Built 1961 Load: 66.2 t ADT: 7,830

MOUNTAINDALE ROAD

Fair

Over: FISHING CREEK

AT PUTNAM RD INT, Frederick, MD

Built 1979 Load: 66.2 t ADT: 346

RANDOLPH ROAD (WB)

Fair

Over: ROCK CREEK

0.6 MILES WEST OF MD 586, Montgomery, MD

Built 1951 Load: 66.2 t ADT: 23,434

OLD COURT ROAD

Fair

Over: BENS RUN

0.4 MI SOUTH OF MD 26, Baltimore, MD

Built 1972 Load: 66.4 t ADT: 8,650

MD 7B

Fair

Over: PRINCIPO CREEK

0.62 MILE SOUTH OF US 40, Cecil, MD

Built 1995 Load: 66.7 t ADT: 1,700

IS 68 WB

Fair

Over: MD 742

0.33 MILE EAST OF MD 42, Garrett, MD

Built 1974 Load: 66.7 t ADT: 12,240

MD 66

Fair

Over: BEAVER CREEK

1.95 MILES N OF MD 910B, Washington, MD

Built 1932 Load: 66.7 t ADT: 8,291

MARYLAND AVENUE

Fair

Over: I-83 MTA AND AMTRAK

0.2 MI S OF NORTH AVE, Baltimore city, MD

Built 1959 Load: 66.7 t ADT: 20,275

BLUE BALL RD

Fair

Over: LITTLE NORTHEAST CREEK

0.01 MI N OF WHEATLEY RD, Cecil, MD

Built 2007 Load: 66.7 t ADT: 3,291

MOUNTAINDALE ROAD

Fair

Over: LITTLE FISHING CREEK

0.1 MI W OF GAMBRILL PARK, Frederick, MD

Built 1982 Load: 66.7 t ADT: 106

IS 595

Fair

Over: PATUXENT RIVER ROAD

0.80 MI E OF PG CO LINE, Anne Arundel, MD

Built 1950 Load: 67.1 t ADT: 81,102

IS 595

Fair

Over: RUTLAND ROAD

@ RUTLAND RD, Anne Arundel, MD

Built 1950 Load: 67.1 t ADT: 101,670

MD 146

Fair

Over: LITTLE GUNPOWDER FALLS

ON HARFORD CO LINE, Baltimore, MD

Built 1931 Load: 67.1 t ADT: 13,621

IS 695 IL

Fair

Over: GWYNNS FALLS

0.12 MILE NORTH OF IS 795, Baltimore, MD

Built 1961 Load: 67.1 t ADT: 188,352

IS 195 SBR

Fair

Over: FRANCIS AVENUE

0.35 MILE SOUTH OF IS 95, Baltimore, MD

Built 1969 Load: 67.1 t ADT: 41,831

VOLLMERHAUSEN RD

Fair

Over: IS 95 SBR

2.2 MI N OF MD 216, Howard, MD

Built 1970 Load: 67.1 t ADT: 2,667

MD 94

Fair

Over: IS 70

0.40 MILE N OF MD 144A, Howard, MD

Built 1974 Load: 67.1 t ADT: 7,450

MD 117

Fair

Over: BUCKLODGE BRANCH

3.12 MILES NORTH OF MD 28, Montgomery, MD

Built 1932 Load: 67.1 t ADT: 5,572

MD 118

Fair

Over: GREAT SENECA CREEK

1.3 MILES NORTH OF MD 28, Montgomery, MD

Built 1931 Load: 67.1 t ADT: 6,121

BRENBROOK DRIVE

Fair

Over: SCOTTS LEVEL BRANCH

0.67 MI N OF MD 26, Baltimore, MD

Built 1982 Load: 67.1 t ADT: 13,165

FALLS ROAD

Fair

Over: GRAVES RUN

0.6 MI N OF BECKLEYSVILLE, Baltimore, MD

Built 1991 Load: 67.1 t ADT: 1,846

I-83 NB OFF RAMP

Fair

Over: MD 25 FALLS RD

OFF RAMP OVER FALLS RD, Baltimore city, MD

Built 1960 Load: 67.1 t ADT: 27,539

I-83

Fair

Over: ON RAMP FROM FALLS ROAD

JFX OVER FALLS RD ON RAMP, Baltimore city, MD

Built 1959 Load: 67.1 t ADT: 141,041

MULLINIX MILL ROAD

Fair

Over: PATUXENT RIVER

1.2 MI W OF MD 94, Howard, MD

Built 1991 Load: 67.1 t ADT: 383

NICHOLSON LANE

Fair

Over: CSXT RAILROAD

0.5 MILES EAST OF MD 355, Montgomery, MD

Built 2008 Load: 67.1 t ADT: 38,971

DENNIS AVENUE

Fair

Over: SLIGO CREEK

0.7 MI E OF JCT SR 97, Montgomery, MD

Built 1999 Load: 67.1 t ADT: 10,971

BEACH DRIVE

Fair

Over: ROCK CREEK

0.15 MI N OF JCT SR 547, Montgomery, MD

Built 1966 Load: 67.1 t ADT: 8,663

IS 195 EBR

Fair

Over: MD 295

1.09 MI E OF MD 170, Anne Arundel, MD

Built 1990 Load: 67.6 t ADT: 39,015

IS 695 OL

Fair

Over: IS 97 RAMPS S & W

0.31 M N OF BALTO CITY, Anne Arundel, MD

Built 1989 Load: 67.6 t ADT: 92,102

IS 95 NB

Fair

Over: STANSFIELD RD

0.50 MI N OF PG CO, Howard, MD

Built 1970 Load: 67.6 t ADT: 186,040

US 40 EB

Fair

Over: IS 81

1.4 MILES WEST OF US 11, Washington, MD

Built 1958 Load: 67.6 t ADT: 12,846

US 40 WB

Fair

Over: IS 81

1.4 MILES WEST OF US 11, Washington, MD

Built 1958 Load: 67.6 t ADT: 12,846

FRANKLIN GIBSON RD

Fair

Over: TRACYS CREEK

0.11 MI SOUTH OF MD 258, Anne Arundel, MD

Built 1998 Load: 67.6 t ADT: 253

I-83 NB OFF RAMP T

Fair

Over: I-83 BERM

NEAR COLDSPRING LANE, Baltimore city, MD

Built 1959 Load: 67.6 t ADT: 72,000

PARRAN ROAD

Fair

Over: SAINT LEONARD CREEK

0.3 MI N OF MD RTE 2/4, Calvert, MD

Built 1994 Load: 67.6 t ADT: 682

LILY PONS ROAD

Fair

Over: SMALL STREAM

0.1 MI EAST OF MD RTE 85, Frederick, MD

Built 1976 Load: 67.6 t ADT: 394

IS 83 NBR

Fair

Over: TIMONIUM ROAD

1.005 MI N OF MD 131, Baltimore, MD

Built 1954 Load: 68.0 t ADT: 137,301

IS 83 SBR

Fair

Over: TIMONIUM ROAD

1.005 MI N OF MD 131, Baltimore, MD

Built 1954 Load: 68.0 t ADT: 137,301

MD 135

Fair

Over: CSX TRANSPORTATION

0.3 MI W OF ALLEGANY CO, Garrett, MD

Built 1957 Load: 68.0 t ADT: 3,542

SUNDAYS LANE

Fair

Over: TUSCARORA CREEK

0.25 MI E OPOSSUMTOWN PIK, Frederick, MD

Built 1978 Load: 68.0 t ADT: 505

TUCKERMAN LANE

Fair

Over: CABIN JOHN CREEK

1 MI E OF SEVEN LOCKS RD, Montgomery, MD

Built 1966 Load: 68.0 t ADT: 24,539

WATSON ROAD

Fair

Over: CORSICA RIVER

0.2 MI N OF MD RTE 304, Queen Anne's, MD

Built 1993 Load: 68.0 t ADT: 787

BW PARKWAY

Fair

Over: CSX RAILROAD

0.1 MILES SOUTH OF MD ROU, Prince George's, MD

Built 1953 Load: 68.0 t ADT: 80,000

MD 267

Fair

Over: AMTRAK

0.12 MILE WEST OF MD 7C, Cecil, MD

Built 1974 Load: 68.5 t ADT: 1,680

MD 352

Fair

Over: GREEN HILL CREEK

3.82 MILES WEST OF MD 349, Wicomico, MD

Built 1931 Load: 68.5 t ADT: 1,452

NORTH AVE. ON-RAMP

Fair

Over: I-83 SB

ON RAMP TO SB I-83, Baltimore city, MD

Built 1959 Load: 68.5 t ADT: 6,289

I-83

Fair

Over: WESTERN RUN

0.1 MI N OF KELLY AVE, Baltimore city, MD

Built 1959 Load: 68.5 t ADT: 32,377

SINGER ROAD

Fair

Over: WINTERS RUN

1.1 MILES W OF MD 24, Harford, MD

Built 1983 Load: 68.5 t ADT: 9,170

DERRICK PLACE

Fair

Over: BUTLER BRANCH

0.03 MI N OF ARMOR DRIVE, Prince George's, MD

Built 1974 Load: 68.5 t ADT: 357

Showing 2,901-2,950 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.