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

WASTE GATE ROAD

Poor

Over: NASSAWANGO CREEK

0.67 M S OF MT HERMON, Wicomico, MD

Built 1986 Load: 72.1 t ADT: 272

AMOSS MILL ROAD

Poor

Over: ISLAND BRANCH

0.5 MILES SE OF MD 136, Harford, MD

Built 1972 Load: 73.5 t ADT: 99

COLUMBIA ROAD

Poor

Over: PLUMTREE BRANCH

0.8 MI. NORTH OF MD. 108, Howard, MD

Built 1987 Load: 75.7 t ADT: 8,641

SHADY GROVE RD EB

Poor

Over: CSXT RAILROAD

0.5 MI EAST OF MD 355, Montgomery, MD

Built 1976 Load: 76.6 t ADT: 19,679

BELMONT WOODS ROAD

Poor

Over: ROCKBURN BRANCH

0.1 MI W OF I-95, Howard, MD

Built 1950 Load: 77.1 t ADT: 100

BESTPITCH FERRY RO

Poor

Over: WINDMILL ISLAND CREEK

0.5 MI W OF GRIFFITH NECK, Dorchester, MD

Built 1982 Load: 78.9 t ADT: 105

NEW BRIDGE ROAD

Poor

Over: CHICAMACOMICO RIVER

0.64 MI.W.OF STEELE N RD., Dorchester, MD

Built 1981 Load: 78.9 t ADT: 184

NEW ROW ROAD

Poor

Over: DUTCH HOLLOW RUN

AT INTERSECTION MD 36, Allegany, MD

Built 1935 Load: 79.4 t ADT: 669

BROKEN LAND PARKWA

Poor

Over: TRIB LITTLE PATUXENT R

At Cradlerock Way, Howard, MD

Built 1972 Load: 79.8 t ADT: 10,000

THREE BRIDGES ROAD

Poor

Over: BURNT MILL BRANCH

0.5 MI E OF MD RTE 94, Wicomico, MD

Built 1967 Load: 84.8 t ADT: 897

BROWN ROAD

Poor

Over: ROARING RUN

0.2 MI NE OF MD 140, Carroll, MD

Built 1985 Load: 86.6 t ADT: 395

MD 36

Poor

Over: JENNINGS RUN

0.33 MILE SOUTH OF MD 638, Allegany, MD

Built 1987 Load: 99.9 t ADT: 1,320

MD 225

Poor

Over: BR OF MATTAWOMAN CREEK

0.02 MILE WEST OF MD 224, Charles, MD

Built 1951 Load: 99.9 t ADT: 8,750

HOSPITAL DRIVE

Poor

Over: MARLEY CREEK

0.4 MI. E. OF OAKWOOD RD, Anne Arundel, MD

Built 1991 Load: 99.9 t ADT: 4,097

TOWN CENTER BLVD.

Poor

Over: TRIBUTARY TO SEVERN RUN

0.5 MI. N OF MD32, Anne Arundel, MD

Built 1988 Load: 99.9 t ADT: 7,820

McKENDREE ROAD

Poor

Over: LYONS CREEK

1.9 MI EAST OF ROUTE 4, Anne Arundel, MD

Built 1965 Load: 99.9 t ADT: 623

KING AVENUE

Poor

Over: BRANCH OF WHITE MARSH RU

0.5 MI NW OF SR 7, Baltimore, MD

Built 1978 Load: 99.9 t ADT: 18,643

REMINGTON AVENUE

Poor

Over: STONEY RUN

0.9 MI N OF NORTH AVE, Baltimore city, MD

Built 1900 Load: 99.9 t ADT: 4,280

HANCOCK RUN ROAD

Poor

Over: HANCOCK RUN

0.1 MI W MD RTE 6, Charles, MD

Built 1970 Load: 99.9 t ADT: 240

CELESTIAL LANE

Poor

Over: SWANSON CREEK

1 MI E. GALLANT GREEN RD, Charles, MD

Built 1992 Load: 99.9 t ADT: 1,228

LILY PONS ROAD

Poor

Over: LOCUST RUN

0.07 MI EAST OF MD RTE 85, Frederick, MD

Built 1977 Load: 99.9 t ADT: 394

LYNN BURKE ROAD

Poor

Over: CHURCH BRANCH

0.1 MI N OF WELLER ROAD, Frederick, MD

Built 1965 Load: 99.9 t ADT: 2,175

BRETHREN CHURCH RD

Poor

Over: CATOCTIN CREEK

0.75 MI EAST OF MD 17, Frederick, MD

Built 1986 Load: 99.9 t ADT: 821

ILCHESTER ROAD

Poor

Over: BONNIE BRANCH

AT BONNIE BRANCH RD, Howard, MD

Built 1945 Load: 99.9 t ADT: 1,281

QUARTER STAFF ROAD

Poor

Over: TRIB TO LITTLE PATUXENT

1000 NW of Martin Ln, Howard, MD

Built 1972 Load: 99.9 t ADT: 300

SUMMER HOLLOW LN

Poor

Over: UNNAMED STREAM

1/8 MI S OF MD 108, Howard, MD

Built 1972 Load: 99.9 t ADT: 500

WESLEY LANE

Poor

Over: BRANCH OF DEEP RUN

50 east of MD 103, Howard, MD

Built 1972 Load: 99.9 t ADT: 500

MIDCOUNTY HWY & MI

Poor

Over: MILL CREEK

.5 MI W OF SHADY GROVE RD, Montgomery, MD

Built 1984 Load: 99.9 t ADT: 31,600

HAWKINS LANDING DR

Poor

Over: GREAT SENECA CREEK TRIBU

.06 M W OF HAWK. CREAM. R, Montgomery, MD

Built 2002 Load: 99.9 t ADT: 132

HOWELL ROAD

Poor

Over: BOOZE CREEK

900 FT. W. OF MD 191, Montgomery, MD

Built 1959 Load: 99.9 t ADT: 105

RABBITT ROAD

Poor

Over: LONG DRAUGHT BRANCH

1 MILE SOUTH OF MD 117, Montgomery, MD

Built 1982 Load: 99.9 t ADT: 1,329

KEPNER COURT

Poor

Over: TRIBUTARY TO NORTHEAST B

0.9 MI N OF GOOD LUCK RD, Prince George's, MD

Built 1960 Load: 99.9 t ADT: 240

MADELEY LANE

Poor

Over: TRIB TO PATUXENT RIVER

0.5 MI NORTH OF MD 450, Prince George's, MD

Built 1962 Load: 99.9 t ADT: 4,608

CLARA BARTON PARKW

Poor

Over: CLARA BARTON PARKWAY (SB

0.1 MILES WEST OF MACARTH, Montgomery, MD

Built 1959 Load: 99.9 t ADT: 40,057

Showing 5,451-5,484 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.