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

MD 32

Good

Over: BR OF MIDDLE PATUXENT RI

1.5 MI N OF BURNTWOODS RD, Howard, MD

Built 2020 Load: 43.7 t ADT: 29,475

Livingston Rd.

Good

Over: MD 210 NORTHBOUND

1.6 MI. S. OF IS 495, Prince George's, MD

Built 2021 Load: 43.7 t ADT: 8,050

IS 81 NB

Good

Over: POTOMAC RIVER

ON WEST VIRGINIA LINE, Washington, MD

Built 1965 Load: 43.7 t ADT: 61,300

IS 81 SB

Good

Over: POTOMAC RIVER

ON WEST VIRGINIA LINE, Washington, MD

Built 1965 Load: 43.7 t ADT: 61,300

GEORGES CREEK ROAD

Good

Over: NEFF RUN

AT CHURCH STREET, Allegany, MD

Built 2007 Load: 44.0 t ADT: 1,575

MD 144FA

Good

Over: CARROLL CREEK

0.21 M E OF MARYLAND AVE, Frederick, MD

Built 1995 Load: 44.0 t ADT: 8,541

MD 7

Good

Over: CSX TRANS.

0.34 MILE SOUTH OF US 40, Harford, MD

Built 1993 Load: 44.0 t ADT: 12,210

MD 214 EBR

Good

Over: US 301 NBR

0.34 MILE WEST OF MD 978B, Prince George's, MD

Built 1959 Load: 44.0 t ADT: 6,803

IS 95/IS 495 RMP P

Good

Over: IS 95/IS 495 RAMP B

2.0 MILES WEST OF MD 210, Anne Arundel, MD

Built 2005 Load: 44.0 t ADT: 191,981

US 13 NB

Good

Over: LEONARD MILL POND

0.4 MILE SOUTH OF MD 675B, Wicomico, MD

Built 2004 Load: 44.0 t ADT: 38,793

BROCK BRIDGE ROAD

Good

Over: LITTLE PATUXENT RIVER

1.0 MILE SOUTH OF MD 32, Anne Arundel, MD

Built 1994 Load: 44.0 t ADT: 5,466

CEDAR AVENUE

Good

Over: TRIBUTARY TO GWYNNS FALL

1.3 MI E OF IS 695, Baltimore, MD

Built 1984 Load: 44.0 t ADT: 60

BEAR RUN ROAD

Good

Over: BEAR BRANCH

2.2 MI W OF MAYBERRY RD, Carroll, MD

Built 1974 Load: 44.0 t ADT: 397

FLAG POND ROAD

Good

Over: DOUBS BRANCH

100 EAST OF BALLENGER CR, Frederick, MD

Built 1986 Load: 44.0 t ADT: 12

MARDIC DRIVE

Good

Over: BYNUM RUN

0.05 MI N OF SPENCEOLA PK, Harford, MD

Built 1998 Load: 44.0 t ADT: 114

IS 95 VIADUCT SB

Good

Over: CONRAIL YARDS

Milepost M56.7, Baltimore city, MD

Built 1982 Load: 44.0 t ADT: 68,369

MD200 (ICC) WB

Good

Over: NORTH BRANCH ROCK CREEK

1.51 MI W OF MD 97, Montgomery, MD

Built 2010 Load: 44.0 t ADT: 30,827

MD 97 SB

Good

Over: MD 200 (ICC)

0.59 MI NORTH OF MD 28, Montgomery, MD

Built 2010 Load: 44.0 t ADT: 27,660

MD 200 (ICC) WB

Good

Over: Ramp NW

0.4 mi W of Briggs Chaney, Montgomery, MD

Built 2011 Load: 44.0 t ADT: 21,574

RAMP WS

Good

Over: MD 200/US29 Ramp EB

1 Mi. E of Old Columbia, Montgomery, MD

Built 2011 Load: 44.0 t ADT: 2,397

IS 70 EB

Good

Over: CRYSTAL FALLS DRIVE

1.98 MILES WEST OF MD 66, Washington, MD

Built 2024 Load: 44.1 t ADT: 70,975

KNIGHTS CORNER ROA

Good

Over: LONG BRANCH

0.87 MI NW OF MD 285, Cecil, MD

Built 2011 Load: 44.1 t ADT: 759

BOHEMIA CHURCH ROA

Good

Over: LITTLE BOHEMIA CREEK

Bohemia Church Road, Cecil, MD

Built 2012 Load: 44.1 t ADT: 580

SNOUFFER SCHOOL RO

Good

Over: CABIN BRANCH

1.3 MI N OF MD124, Montgomery, MD

Built 2020 Load: 44.1 t ADT: 18,315

MD 10 NBR

Good

Over: JUMPERS HOLE ROAD

0.05 MI S OF MD 100, Anne Arundel, MD

Built 1988 Load: 44.4 t ADT: 33,320

MD 295 SBR

Good

Over: MD 100

2.7 MI SE OF IS 95, Anne Arundel, MD

Built 1992 Load: 44.4 t ADT: 88,882

IS 370 WBR

Good

Over: CRABBS BRANCH WAY

5.84 MILE WEST OF MD 97, Montgomery, MD

Built 2010 Load: 44.4 t ADT: 78,741

MD 3 NB

Good

Over: PATUXENT RIVER

ON ANNE ARUNDEL CO LINE, Prince George's, MD

Built 1957 Load: 44.4 t ADT: 75,720

MD 3 SB

Good

Over: PATUXENT RIVER

ON ANNE ARUNDEL CO LINE, Prince George's, MD

Built 1957 Load: 44.4 t ADT: 75,720

MD 202

Good

Over: US 50

0.28 M S OF KILMER STREET, Prince George's, MD

Built 1959 Load: 44.4 t ADT: 33,102

IS 95

Good

Over: SUITLAND PARKWAY (GV 119

0.79 MI. S. OF MD 4, Prince George's, MD

Built 2022 Load: 44.4 t ADT: 193,825

MD 354

Good

Over: ADKINS MILL POND

0.23 MI N OF MD 350, Wicomico, MD

Built 2002 Load: 44.4 t ADT: 1,842

HARMANS ROAD

Good

Over: STONY RUN

0.36 MI. E. OF SEVERN RD, Anne Arundel, MD

Built 2016 Load: 44.4 t ADT: 6,736

GUNPOWDER ROAD

Good

Over: GEORGES RUN

0.1 MI W OF FALLS RD, Baltimore, MD

Built 2010 Load: 44.4 t ADT: 1,000

POPES CREEK ROAD

Good

Over: POPES CREEK

2 MI W US RTE 301, Charles, MD

Built 1997 Load: 44.4 t ADT: 500

STONE ROAD

Good

Over: SILVER RUN

0.03 MI NW OF MAYBERRY RD, Carroll, MD

Built 1979 Load: 44.4 t ADT: 626

GOOD INTENT ROAD

Good

Over: LITTLE PIPE CREEK

ON FREDERICK CO LINE, Carroll, MD

Built 1977 Load: 44.4 t ADT: 748

BRIDGEPORT ROAD

Good

Over: CATTAIL BRANCH

0.5 MI SW OF MD 140, Frederick, MD

Built 1978 Load: 44.4 t ADT: 73

MOSER ROAD

Good

Over: HUNTING CREEK

0.5 MI SE OF FREDERICK RD, Frederick, MD

Built 1975 Load: 44.4 t ADT: 1,372

ACCESS ROAD

Good

Over: HUDSON BRANCH

FREDERICK RD & ROGERS AVE, Howard, MD

Built 2003 Load: 44.4 t ADT: 10

BRINK ROAD

Good

Over: TRIB TO GOSHEN BRANCH

1.0 MILES WEST OF MD 124, Montgomery, MD

Built 2007 Load: 44.4 t ADT: 11,066

MATTAPONI ROAD

Good

Over: TRIB TO MATTAPONI CREEK

0.64 MI NORTH OF MD 382, Prince George's, MD

Built 2009 Load: 44.4 t ADT: 133

WEST PROSPECT BAY

Good

Over: UNNAMED POND

0.75 MI FROM PERRY CORNER, Queen Anne's, MD

Built 1973 Load: 44.4 t ADT: 1,606

WEST PROSPECT BAY

Good

Over: UNNAMED POND

0.75 MI FROM PERRY CORNER, Queen Anne's, MD

Built 1973 Load: 44.4 t ADT: 1,606

MECHANICSVILLE RD

Good

Over: CHAPTICO CREEK

0.7 MI N OF MD RTE 234, St. Mary's, MD

Built 2011 Load: 44.4 t ADT: 2,876

MILLERS CHURCH RD

Good

Over: ANTIETAM CREEK

0.06 MI W OF MD RTE 60, Washington, MD

Built 1984 Load: 44.4 t ADT: 193

I-395 RAMP E

Good

Over: MIDDLE BRANCH

Milepost 0.2, Baltimore city, MD

Built 1979 Load: 44.4 t ADT: 15,641

MAXA ROAD

Good

Over: I-95

Milepost M85.6, Harford, MD

Built 1963 Load: 44.4 t ADT: 1,239

LAYHILL RD (MD182)

Good

Over: MD 200 (ICC)

2.79 MI WEST OF MD650, Montgomery, MD

Built 2010 Load: 44.4 t ADT: 14,607

MD 200 (ICC) EB

Good

Over: NORTHWEST BRANCH

2.54 MI WEST OF MD650, Montgomery, MD

Built 2010 Load: 44.4 t ADT: 32,786

Showing 4,101-4,150 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.