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)

Counties (24)

Allegany 245 Anne Arundel 389 Baltimore 783 Baltimore city 374 Calvert 33 Caroline 70 Carroll 205 Cecil 193 Charles 94 Dorchester 47 Frederick 486 Garrett 139 Harford 275 Howard 309 Kent 44 Montgomery 515 Prince George's 576 Queen Anne's 88 Somerset 46 St. Mary's 50 Talbot 42 Washington 300 Wicomico 99 Worcester 82

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.

WASHINGTON STREET

Poor

Over: CSXT RAILROAD

0.2 MI W OF CUMBERLAND ST, Allegany, MD

Built 1930 Load: 0.0 t ADT: 110

CUMBERLAND STREET

Poor

Over: CSXT RAILROAD

0.6 MI E OF WASHINGTON ST, Allegany, MD

Built 1929 Load: 0.0 t ADT: 110

MILL STREET

Poor

Over: ROCK RUN

.01 MI S. OF RACE STREET, Cecil, MD

Built 1940 Load: 0.0 t ADT: 100

BACK LANDING ROAD

Poor

Over: HUNTING CREEK

ON CAROLINE COUNTY LINE, Dorchester, MD

Built 1941 Load: 0.0 t

TALBOT AVENUE

Poor

Over: CSXT RAILROAD

0.2 MI E OF MICHIGAN AVE, Montgomery, MD

Built 1918 Load: 0.0 t ADT: 1,430

TAYLOR MILL ROAD

Poor

Over: OLD MILL STREAM BRANCH

0.7 MILE EAST OF MD 213, Queen Anne's, MD

Built 1955 Load: 0.0 t ADT: 100

All Bridges in Maryland

SNOWDEN FARM PARKW

Good

Over: TRIB TO LITTLE SENECA CR

N. OF FREDERICK ROAD, Montgomery, MD

Built 2011 Load: 99.9 t ADT: 5,795

FOREMAN BOULEVARD

Good

Over: TRIB TO LITTLE SENECA CR

E. OF FREDERICK ROAD, Montgomery, MD

Built 2011 Load: 99.9 t ADT: 3,500

WEST OLD BALTIMORE

Good

Over: CABIN BRANCH

0.5 MI EAST OF MD 121, Montgomery, MD

Built 2016 Load: 99.9 t ADT: 2,221

SERPENTINE WAY

Good

Over: TRIB TO PAINT BRANCH

0.7 MILES WEST OF US-29, Montgomery, MD

Built 1975 Load: 99.9 t ADT: 3,476

CENTURION WAY

Good

Over: SANDY BRANCH

3.3 MILES NORTH MD-190, Montgomery, MD

Built 2000 Load: 99.9 t ADT: 6,433

OBSERVATION DRIVE

Good

Over: TRIB TO LITTLE SENECA CR

0.3 MI. EAST OF I-270, Montgomery, MD

Built 1994 Load: 99.9 t ADT: 11,584

HOMECREST ROAD

Good

Over: NORTHWEST BRANCH TRIB

0.9 MI. E. OF MD 97, Montgomery, MD

Built 1972 Load: 99.9 t ADT: 105

UPSHIRE CIRCLE

Good

Over: SHADY BRANCH

.7 MI W OF MUDDY BR ROAD, Montgomery, MD

Built 1990 Load: 99.9 t ADT: 265

VICTORY FARM DRIVE

Good

Over: TRIBUTARY TO WHETSTONE R

0.3 MI N OF GIRARD ST, Montgomery, MD

Built 1981 Load: 99.9 t ADT: 3,667

CARNATION DRIVE

Good

Over: WATTS BRANCH TRIBUTARY

1.25 MI N OF MD 28, Montgomery, MD

Built 1969 Load: 99.9 t ADT: 480

WOOD POINTE DRIVE

Good

Over: UNNAMED TRIBUTARY

2 MI SE OF MD 193 MD 564, Prince George's, MD

Built 1992 Load: 99.9 t ADT: 480

RUBY LOCKHART BOUL

Good

Over: UNNAMED STREAM

.2 MI N OF ST JOSEPHS DR, Prince George's, MD

Built 2010 Load: 99.9 t ADT: 9,000

RITCHIE ROAD

Good

Over: RITCHIE BRANCH

0.13 MI N OF ASHVILLE RD, Prince George's, MD

Built 2002 Load: 99.9 t ADT: 24,341

TEMPLE HILL ROAD

Good

Over: TRIB TO HENSON CREEK

.11 MI S OF BRINKLEY ROAD, Prince George's, MD

Built 1964 Load: 99.9 t ADT: 16,823

HIL-MAR DRIVE

Good

Over: TRIBUTARY TO HENSON CREE

0.17 MI W OF WALTERS LANE, Prince George's, MD

Built 2008 Load: 99.9 t ADT: 996

BRINKLEY ROAD

Good

Over: TRIBUTARY TO HENSON CREE

0.15 MI W OF FISHER ROAD, Prince George's, MD

Built 2008 Load: 99.9 t ADT: 32,967

IRVINGTON STREET

Good

Over: BARNABY RUN

200 FEET S. OF OWENS ROAD, Prince George's, MD

Built 1958 Load: 99.9 t ADT: 5,389

BOHAC LANE

Good

Over: TRIB TO MATTAWOMAN CR

1.0 MI FROM MD 210, Prince George's, MD

Built 2000 Load: 99.9 t ADT: 1,185

JOHN ROGERS BLVD

Good

Over: TRIB TO FEDERAL SPRG BR

.2 MI N OLD MARLBORO PIKE, Prince George's, MD

Built 1993 Load: 99.9 t ADT: 4,850

KINGS MANOR DRIVE

Good

Over: NORTHEAST BRANCH

0.5 M EAST OF MD 193, Prince George's, MD

Built 1980 Load: 99.9 t ADT: 2,400

TRUMPS HILL ROAD

Good

Over: CHARLES BRANCH

0.09 MI S OF MD 382, Prince George's, MD

Built 2001 Load: 99.9 t ADT: 994

TOLLGATE RIDGE RD

Good

Over: TONOLOWAY CREEK

0.6 MI E OF MD 144, Washington, MD

Built 1916 Load: 99.9 t ADT: 828

BROADFORDING ROAD

Good

Over: CONOCOCHEAGUE CREEK

0.7 MI W OF MD RTE 63, Washington, MD

Built 1829 Load: 99.9 t ADT: 265

MT AETNA ROAD

Good

Over: BEAVER CREEK

0.1 MI W OF MD RTE 66, Washington, MD

Built 1993 Load: 99.9 t ADT: 1,654

POFFENBERGER ROAD

Good

Over: ANTIETAM CREEK

0.57 MI W OF ALT US RT 40, Washington, MD

Built 1841 Load: 99.9 t ADT: 1,698

POFFENBERGER ROAD

Good

Over: ANTIETAM CREEK

0.54 MI W OF ALT US RT 40, Washington, MD

Built 1840 Load: 99.9 t ADT: 1,698

COFFMAN FARMS RD

Good

Over: LITTLE ANTIETAM CREEK

0.1 MI E OF MD RTE 34, Washington, MD

Built 1832 Load: 99.9 t ADT: 362

GOVERNOR LANE BOUL

Good

Over: TRIBUTARY OF SEMPLE RUN

1 MI N OF MD RTE 68, Washington, MD

Built 1969 Load: 99.9 t ADT: 5,806

I-395 RAMP E

Good

Over: STADIUM LOT

Milepost 3.2, Baltimore city, MD

Built 1980 Load: 99.9 t ADT: 9,126

MD 200

Good

Over: Mill Creek

4.98 mi west of MD 97, Montgomery, MD

Built 2008 Load: 99.9 t ADT: 42,498

MD 200

Good

Over: Mill Creek Tributary

4.56 mi west of MD 97, Montgomery, MD

Built 2008 Load: 99.9 t ADT: 42,498

MD 200

Good

Over: Unnamed Stream

0.7 mi E OLD GUNPOWDER RD, Prince George's, MD

Built 2010 Load: 99.9 t ADT: 13,543

MD 200 EB TO 95 SB

Good

Over: Unnamed Stream

0.7 mi E Old Gunpowder Rd, Prince George's, MD

Built 2009 Load: 99.9 t ADT: 3,061

MD 200

Good

Over: AMMENDALE BRANCH

0.1 mi W OF KONTERRA Dr, Prince George's, MD

Built 2013 Load: 99.9 t ADT: 5,265

WASHINGTON STREET

Poor

Over: CSXT RAILROAD

0.2 MI W OF CUMBERLAND ST, Allegany, MD

Built 1930 Load: 0.0 t ADT: 110

CUMBERLAND STREET

Poor

Over: CSXT RAILROAD

0.6 MI E OF WASHINGTON ST, Allegany, MD

Built 1929 Load: 0.0 t ADT: 110

MILL STREET

Poor

Over: ROCK RUN

.01 MI S. OF RACE STREET, Cecil, MD

Built 1940 Load: 0.0 t ADT: 100

BACK LANDING ROAD

Poor

Over: HUNTING CREEK

ON CAROLINE COUNTY LINE, Dorchester, MD

Built 1941 Load: 0.0 t

TALBOT AVENUE

Poor

Over: CSXT RAILROAD

0.2 MI E OF MICHIGAN AVE, Montgomery, MD

Built 1918 Load: 0.0 t ADT: 1,430

TAYLOR MILL ROAD

Poor

Over: OLD MILL STREAM BRANCH

0.7 MILE EAST OF MD 213, Queen Anne's, MD

Built 1955 Load: 0.0 t ADT: 100

NASA ACCESS ROAD

Poor

Over: BALTIMORE-WASHINGTON PAR

BELTWAY TO EXIT 2 - ROUTE, Prince George's, MD

Built 1966 Load: 0.0 t ADT: 10,000

OLD SELBYSPORT RD

Poor

Over: BEAR CREEK

0.01 MI N OF WALNUT ST, Garrett, MD

Built 1920 Load: 2.7 t ADT: 30

ZION ROAD

Poor

Over: HAWLINGS RIVER

2.8 MILES NORTH OF MD 108, Montgomery, MD

Built 1930 Load: 4.5 t ADT: 2,440

ROXBURY ROAD

Poor

Over: BEAVER CREEK

0.1 MI W OF ALT US RTE 40, Washington, MD

Built 1920 Load: 7.3 t ADT: 533

TUFTON AVENUE

Poor

Over: WATERSPOUT RUN

2.63 MI. WEST MD 25, Baltimore, MD

Built 1920 Load: 7.7 t ADT: 7,735

MOHRS LANE

Poor

Over: CSX RAILROAD

0.1 MI NW OF US RTE 40, Baltimore, MD

Built 1912 Load: 9.1 t ADT: 1,600

OLD MONTGOMERY RD

Poor

Over: LITTLE PATUXENT RIVER

0.5 MI W OF US RTE 29, Howard, MD

Built 1935 Load: 10.0 t ADT: 10

UPPER BECKLEYSVILL

Poor

Over: MURPHY RUN

0.05 MI E OF GROSS MIL RD, Carroll, MD

Built 1960 Load: 10.9 t ADT: 1,745

POPLAR HILL ROAD

Poor

Over: ZEKIAH SWAMP RUN

2.5 MI E OF MD 5, Charles, MD

Built 1969 Load: 11.3 t ADT: 4,644

POFFENBERGER ROAD

Poor

Over: CATOCTIN CREEK

1.1 MILES EAST OF MD 383, Frederick, MD

Built 1878 Load: 11.8 t ADT: 375

Showing 5,201-5,250 of 5,484 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
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.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

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.