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

Strawberry Lake Wa

Good

Over: Tributary to Little Patu

0.6 MI S. of MD 170, Anne Arundel, MD

Built 1999 Load: 99.9 t ADT: 6,700

ROLAND AVENUE

Good

Over: ROLAND RUN

300 FT W OF RUXWAY RD, Baltimore, MD

Built 1942 Load: 99.9 t ADT: 873

EAGLE MILL ROAD

Good

Over: LITTLE FALLS

0.7 MI NE WALKER AVE, Baltimore, MD

Built 2011 Load: 99.9 t ADT: 200

FRANKLIN BOULEVARD

Good

Over: ROACHES RUN

0.24 MI SE OF MD 140, Baltimore, MD

Built 1974 Load: 99.9 t ADT: 23,430

MCCORMICK ROAD

Good

Over: OREGON BRANCH

0.8 MI S. OF SHAWAN ROAD, Baltimore, MD

Built 1966 Load: 99.9 t ADT: 17,473

COLLEGIATE DRIVE

Good

Over: BULL BRANCH

0.1 MI W OF ROLLING ROAD, Baltimore, MD

Built 1991 Load: 99.9 t ADT: 1,000

DOLFIELD BOULEVARD

Good

Over: TRIBUTARY TO RED RUN

0.1 MI N OF LAKESIDE BLVD, Baltimore, MD

Built 1992 Load: 99.9 t ADT: 3,600

GERST ROAD

Good

Over: BEAN RUN

.5 MI N OF E. JOPPA ROAD, Baltimore, MD

Built 2000 Load: 99.9 t ADT: 558

LAKESIDE BOULEVARD

Good

Over: RED RUN

1.0 MI. SW. EXIT 4 I-795, Baltimore, MD

Built 1990 Load: 99.9 t ADT: 21,244

WALTHAM WOODS ROAD

Good

Over: TRIBUTARY TO GUNPOWDER F

1.9MI E OF EXIT 30 I-695, Baltimore, MD

Built 1980 Load: 99.9 t ADT: 9,216

FRANKLIN SQUARE BO

Good

Over: SOUTH FORK OF WHITE MARS

1.8 MI SW OF RT 7, Baltimore, MD

Built 1999 Load: 99.9 t ADT: 15,245

PEBBLE BROOKE ROAD

Good

Over: TRIBUTARY TO WESTERN RUN

50 FT NORTH OF SMITH AVE., Baltimore, MD

Built 2009 Load: 99.9 t ADT: 339

WARREN ROAD

Good

Over: PARKS RUN

0.3 Mi. West of MD 45, Baltimore, MD

Built 1990 Load: 99.9 t ADT: 17,400

LOCH RAVEN HS ACCE

Good

Over: TRIBUTARY TO MINEBANK RU

0.3 MI E OF COWPENS RD, Baltimore, MD

Built 2014 Load: 99.9 t ADT: 5

GREENSIDE DRIVE

Good

Over: TRIBUTARY TO PARKS RUN

0.4 MI E OF MD 45, Baltimore, MD

Built 1966 Load: 99.9 t ADT: 4,351

HUNTINGTOWN ROAD

Good

Over: COCKTOWN CREEK

1.54 MI SW OF MD 262, Calvert, MD

Built 1996 Load: 99.9 t ADT: 1,434

MILL BRANCH ROAD

Good

Over: TRIBUTARY OF CHEW CREEK

0.1 MILES SOUTH OF MD 262, Calvert, MD

Built 1990 Load: 99.9 t ADT: 441

MIDDLETOWN ROAD

Good

Over: UNNAMED TRIBUTARY

0.3 MI S OF SMALLWOOD DR, Charles, MD

Built 2006 Load: 99.9 t ADT: 3,635

BILLINGSLEY ROAD

Good

Over: UNNAMED TRIBUTARY

0.24 MI E OF MIDDLETOWN, Charles, MD

Built 2006 Load: 99.9 t ADT: 17,493

SILENT CREEK ROAD

Good

Over: WETLANDS

.4 MI N OF BILLINGSLEY RD, Charles, MD

Built 2005 Load: 99.9 t ADT: 732

CHERYL TURN

Good

Over: TRIBUTARY TO PINEY BRANC

1.5 MI NW of US301-MD228, Charles, MD

Built 2021 Load: 99.9 t ADT: 100

FRETER ROAD

Good

Over: PINEY RUN

0.40 MI SOUTH OF MD 26, Carroll, MD

Built 2004 Load: 99.9 t ADT: 806

MAHURON ROAD

Good

Over: UNNAMED STREAM

75 FT. S. OLD WEST. PIKE, Carroll, MD

Built 2008 Load: 99.9 t ADT: 320

STAFFORD ROAD

Good

Over: TIDY ISLAND CREEK

.05 MI W OF DELAWARE LINE, Caroline, MD

Built 1997 Load: 99.9 t ADT: 67

WOODYARD ROAD

Good

Over: LONG MARSH DITCH

1.6 MI S OF MD 302, Caroline, MD

Built 1988 Load: 99.9 t ADT: 345

EVELAND ROAD

Good

Over: PINEY BRANCH

3 MILES NORTH OF MD 404, Caroline, MD

Built 1975 Load: 99.9 t ADT: 635

TAYLOR ROAD

Good

Over: LONG MARSH DITCH

2 MILES EAST OF MD 313, Caroline, MD

Built 2000 Load: 99.9 t ADT: 184

DRAWBRIDGE RD

Good

Over: MIDDLETOWN BRANCH

4.45 MI SE OF US RTE 50, Dorchester, MD

Built 1950 Load: 99.9 t ADT: 634

LINKWOOD DRIVE

Good

Over: HIGGINS MILLPOND

0.77 MI W OF US RTE 50, Dorchester, MD

Built 1991 Load: 99.9 t ADT: 1,117

NEW DESIGN ROAD

Good

Over: TUSCARORA CREEK

0.53 MI S OF MD RTE 28, Frederick, MD

Built 1982 Load: 99.9 t ADT: 125

CAP STINE ROAD

Good

Over: BR OF TUSCARORA CREEK

AT HOWARD STUP RD INTER, Frederick, MD

Built 1975 Load: 99.9 t ADT: 183

WINCHESTER BOULEVA

Good

Over: TRIBUTARY OF TUSCARORA C

0.1 MI E OF MOUNTVILLE RD, Frederick, MD

Built 1992 Load: 99.9 t ADT: 350

WILLOW BROOK ROAD

Good

Over: TUSCARORA CREEK

0.1 MI SOUTH OF WILLOW RD, Frederick, MD

Built 1982 Load: 99.9 t ADT: 3,811

CORPORATE DRIVE

Good

Over: KING BRANCH

.5 MI. WEST OF NEW DESIGN, Frederick, MD

Built 1992 Load: 99.9 t ADT: 8,118

CORPORATE DRIVE

Good

Over: ARUNDEL BRANCH

0.25 MI W OF NEW DESIGN R, Frederick, MD

Built 1990 Load: 99.9 t ADT: 6,273

CRESTWOOD BLVD

Good

Over: ARUNDEL BRANCH

.2 MI E. OF NEW DESIGN RD, Frederick, MD

Built 1990 Load: 99.9 t ADT: 9,500

CORPORATE DRIVE

Good

Over: PIKE BRANCH

0.39 MI EAST OF BALLENGER, Frederick, MD

Built 1993 Load: 99.9 t ADT: 5,986

CORPORATE DRIVE

Good

Over: PIKE BRANCH

0.40 MI EAST OF BALLENGER, Frederick, MD

Built 1993 Load: 99.9 t ADT: 5,986

ANGLEBERGER ROAD

Good

Over: SANDY RUN

2.5 MILES EAST OF US 15, Frederick, MD

Built 1982 Load: 99.9 t ADT: 122

WILHIDE ROAD

Good

Over: LITTLE HUNTING CREEK

0.37 MI S OF BLACKS MILL, Frederick, MD

Built 1982 Load: 99.9 t ADT: 153

IRISHTOWN ROAD

Good

Over: FLAT RUN

0.8 MI NORTH OF EMMITSBRG, Frederick, MD

Built 1982 Load: 99.9 t ADT: 201

HAYES ROAD

Good

Over: MIDDLE CREEK

AT BRANDENBURG HOLLOW RD, Frederick, MD

Built 1981 Load: 99.9 t ADT: 27

PRICES DISTILLERY

Good

Over: FAHRNEY BRANCH

1.0 MI S OF MD RTE. 80, Frederick, MD

Built 1983 Load: 99.9 t ADT: 750

ARLINGTON MILL RD

Good

Over: TOWN BRANCH

0.1 MILE WEST OF MD 75, Frederick, MD

Built 1997 Load: 99.9 t ADT: 125

SPRING RIDGE PRKWY

Good

Over: LONG BRANCH

AT MD 144 INTERSECTION, Frederick, MD

Built 1991 Load: 99.9 t ADT: 5,407

RIDGEFIELD DRIVE

Good

Over: LONG BRANCH

JUST NORTH OF MD 144, Frederick, MD

Built 1991 Load: 99.9 t ADT: 2,707

BENTZEL ROAD

Good

Over: BRANCH OF FRIENDS CREEK

175 FROM MD RTE 550, Frederick, MD

Built 1980 Load: 99.9 t ADT: 126

CASH SMITH ROAD

Good

Over: ISRAEL CREEK

0.25 MI N OF COPPERMINE R, Frederick, MD

Built 1982 Load: 99.9 t ADT: 149

LANDER ROAD

Good

Over: LANDER BRANCH

0.75 MI W OF MD RTE 464, Frederick, MD

Built 1982 Load: 99.9 t ADT: 74

OLD MIDDLETOWN RD

Good

Over: LEWIS MILL BRANCH

1.62 MI N OF MD RTE 180, Frederick, MD

Built 1962 Load: 99.9 t ADT: 2,532

Showing 5,101-5,150 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.