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

BILLINGSLEY RD EBR

Good

Over: PINEY BRANCH

2.5 MI E OF ST CHAR. PKWY, Charles, MD

Built 1994 Load: 85.7 t ADT: 7,023

MT HOREB ROAD

Good

Over: LITTLE DEER CREEK

1.2 MILES NW OF MD 165, Harford, MD

Built 1955 Load: 85.7 t ADT: 751

MONTROSE ROAD

Good

Over: OLD FARM CREEK

0.5 MI. W. OF JEFFERSON, Montgomery, MD

Built 2008 Load: 85.7 t ADT: 66,690

HONEYLOCUST DRIVE

Good

Over: TOWSERS BRANCH

0.25 MI W OF MD 3, Anne Arundel, MD

Built 2018 Load: 85.9 t ADT: 1,128

IS 68 RAMP 6

Good

Over: PRATT HOLLOW

RP FR I 68 EB TO US 40SC, Allegany, MD

Built 1990 Load: 86.2 t ADT: 9,992

MD 222

Good

Over: ROCK RUN

0.84 MILE NORTH OF MD 276, Cecil, MD

Built 2016 Load: 86.2 t ADT: 2,700

HARMONY ROAD

Good

Over: LITTLE CATOCTIN CREEK

0.25 MI SOUTH OF US 40, Frederick, MD

Built 1999 Load: 86.2 t ADT: 1,296

CAP STINE ROAD

Good

Over: RENN BRANCH

0.7 MI SE OF US RTE 340, Frederick, MD

Built 1985 Load: 86.2 t ADT: 1,359

CLOPPER ROAD

Good

Over: ANTIETAM CREEK

0.95 MI S OF MD RTE 60, Washington, MD

Built 2005 Load: 86.2 t ADT: 229

MD 10 SBR

Good

Over: MARLEY CREEK

0.45 MI S OF MD 648E, Anne Arundel, MD

Built 1988 Load: 86.6 t ADT: 43,170

BUCHER JOHN ROAD

Good

Over: LITTLE PIPE CREEK

0.02 MI W OF UNION BRIDGE, Carroll, MD

Built 1960 Load: 86.6 t ADT: 1,159

THEODORE ROAD

Good

Over: PRINCIPIO CREEK

0.65 MI E OF BELVIDERE RD, Cecil, MD

Built 2006 Load: 87.1 t ADT: 2,708

WINTERSON ROAD

Good

Over: MD 295 SBR

0.41 MI N OF IS 195, Anne Arundel, MD

Built 1990 Load: 87.5 t ADT: 7,530

MD 24

Good

Over: MD 924

0.53 MI NORTH OF I-95, Harford, MD

Built 2011 Load: 87.5 t ADT: 72,060

HOFFMAN SEACHRIST

Good

Over: CABBAGE RUN

100 N OF BENNIE DUNCAN R, Frederick, MD

Built 1985 Load: 87.5 t ADT: 202

SHEPPARD LANE

Good

Over: MIDDLE PATUXENT RIVER

0.6 MI N OF MD RTE 108, Howard, MD

Built 1997 Load: 87.5 t ADT: 3,027

HARWOOD ROAD

Good

Over: STOCKETTS RUN

2.0 MI WEST OF MD ROUTE 2, Anne Arundel, MD

Built 2023 Load: 87.8 t ADT: 708

IS 68 RAMP 5

Good

Over: PRATT HOLLOW

RP FR US 40SC TO I 68 EB, Allegany, MD

Built 1990 Load: 88.0 t ADT: 9,992

ST. MARKS ROAD

Good

Over: TRIB. OF BROAD RUN

1.0 MI S OF MD RTE 383, Frederick, MD

Built 1982 Load: 88.4 t ADT: 196

MD 6

Good

Over: PERSIMMON CREEK

2.44 MILES W OF MD 235, St. Mary's, MD

Built 2021 Load: 88.5 t ADT: 4,200

IS 70 EB

Good

Over: BLACK ROCK RD

0.78 MILE EAST OF MD 66, Washington, MD

Built 2009 Load: 89.1 t ADT: 58,600

IS 70 WB

Good

Over: BLACK ROCK RD

0.78 MILE EAST OF MD 66, Washington, MD

Built 2009 Load: 89.1 t ADT: 58,600

US 50 EB

Good

Over: WICOMICO RIVER

0.591 M E OF JERSEY ROAD, Wicomico, MD

Built 2001 Load: 89.3 t ADT: 18,971

STINNETT ROAD

Good

Over: PLUM POINT CREEK

1.3 MI SOUTH OF MD 263, Calvert, MD

Built 1995 Load: 89.3 t ADT: 1,360

I-395 RAMP EE

Good

Over: STADIUM LOT

Milepost M3.4, Baltimore city, MD

Built 1980 Load: 89.3 t ADT: 2,256

BALLENGER CREEK PI

Good

Over: DOUBS BRANCH

0.1 MI SW OF DOUBS ROAD, Frederick, MD

Built 1975 Load: 89.8 t ADT: 1,065

STONEYBROOK DRIVE

Good

Over: CSXT RAILROAD

0.1 MILE WEST OF MD 192, Montgomery, MD

Built 2001 Load: 89.8 t ADT: 6,654

MD 200

Good

Over: Edmonston Creek

MD 200 0.7 mi E of I-95, Prince George's, MD

Built 2010 Load: 89.8 t ADT: 5,950

BEAR CREEK DRIVE

Good

Over: BEAR CABIN BRANCH

0.2 MI N OF BERNADETTE DR, Harford, MD

Built 1980 Load: 90.2 t ADT: 1,111

MD 382

Good

Over: CHARLES BRANCH

1.26 MILES S OF US 301, Prince George's, MD

Built 2024 Load: 90.4 t ADT: 6,700

MD 36

Good

Over: TRIB TO JENNINGS RUN

1.87 MI N OF MD 638, Allegany, MD

Built 2020 Load: 90.7 t ADT: 2,724

MD 364

Good

Over: DIVIDING CREEK

ON WORCESTER CO LINE, Somerset, MD

Built 2019 Load: 92.3 t ADT: 975

MD 32 Northbound

Good

Over: Terrapin Branch

0.82 MI. SOUTH OF MD 144, Howard, MD

Built 2020 Load: 93.0 t ADT: 29,475

MD 32 Southbound

Good

Over: Terrapin Branch

0.82 MI. SOUTH OF MD 144, Howard, MD

Built 2020 Load: 93.0 t ADT: 29,475

MD 32 Northbound

Good

Over: Middle Patuxent River

1.18 MILE SOUTH OF MD 144, Howard, MD

Built 2020 Load: 93.0 t ADT: 29,475

MD 32 Southbound

Good

Over: Middle Patuxent River

1.18 MILE SOUTH OF MD144A, Howard, MD

Built 2020 Load: 93.0 t ADT: 29,475

NELSON ROAD

Good

Over: CAREYTOWN BRANCH

0.15 MI S OF SWAMP ROAD, Worcester, MD

Built 2015 Load: 94.0 t ADT: 59

US 219

Good

Over: CHERRY CREEK

2.7 MILES S OF MD 826D, Garrett, MD

Built 2014 Load: 95.3 t ADT: 2,390

OLD LEGISLATIVE RD

Good

Over: WINEBRENNER RUN

0.14 MI S OF SHAFT-MIS RD, Allegany, MD

Built 2020 Load: 96.9 t ADT: 937

WATERVALE ROAD

Good

Over: WINTERS RUN

1.7 MILES N OF MD 152, Harford, MD

Built 2016 Load: 96.9 t ADT: 2,479

TIVOLI LAKE BOULEV

Good

Over: BEL PRE CREEK

1.7 MILE EAST OF MD 97, Montgomery, MD

Built 2017 Load: 96.9 t ADT: 310

CENTURY BOULEVARD

Good

Over: TRIB TO LITTLE SENECA CR

0.3 MILES WEST OF I-270, Montgomery, MD

Built 2014 Load: 96.9 t ADT: 3,720

US 13 RAMP C (5)

Good

Over: US 13 BU

0.14 M S OF BR NO 2205300, Wicomico, MD

Built 1972 Load: 97.2 t ADT: 10,172

RESERVE BOULEVARD

Good

Over: UNNAMED TRIBUTARY TO LIT

.03 MI S OF MD198, Anne Arundel, MD

Built 2019 Load: 97.2 t ADT: 194

FINGERBOARD SCHOOL

Good

Over: CABIN JOHN CREEK

.3 Mi South Cherry Grove, Cecil, MD

Built 1975 Load: 97.2 t ADT: 195

Rock Lynn Circle

Good

Over: Pole Branch

LINDEN GROVE SUBDIVISION, Charles, MD

Built 2010 Load: 97.2 t ADT: 365

JEFFERSON TECHNOLO

Good

Over: US ROUTE 340/15 INTERCHA

0.7 MI S OF I-70, Frederick, MD

Built 2015 Load: 97.2 t ADT: 500

GLEN COVE ROAD

Good

Over: PEDDLER RUN

1.90 MI. E OF DUBLIN, Harford, MD

Built 2019 Load: 97.2 t ADT: 481

MILLVILLE ROAD

Good

Over: FURNACE BRANCH

1.25 MI S OF MD 12, Worcester, MD

Built 2015 Load: 97.2 t ADT: 59

IS 68

Good

Over: LITTLE PINE LICK HOLLOW

0.46 MI W OF US 40 SCN, Allegany, MD

Built 1990 Load: 99.9 t ADT: 18,551

Showing 5,001-5,050 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.