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

IS 95 RAMP E(4)

Fair

Over: BR OF SOUTHWEST BR

0.08 MILE SOUTH OF MD 214, Prince George's, MD

Built 1964 Load: 47.2 t ADT: 10,979

IS 70 EB

Fair

Over: WHITEHALL RD

1.05 MILES WEST OF MD 66, Washington, MD

Built 1967 Load: 47.2 t ADT: 61,140

IS 70 WB

Fair

Over: WHITEHALL RD

1.05 MILES WEST OF MD 66, Washington, MD

Built 1967 Load: 47.2 t ADT: 61,140

PEA VINE RUN ROAD

Fair

Over: PEA VINE RUN

0.80 MI W OF MD 807, Allegany, MD

Built 1945 Load: 47.2 t ADT: 177

WILSON ROAD

Fair

Over: HALL CREEK

1.0 MI WEST OF MD RTE 2, Anne Arundel, MD

Built 1960 Load: 47.2 t ADT: 146

PERRING PARKWAY

Fair

Over: HERRING RUN

0.2 MI N BELVEDERE AVE, Baltimore city, MD

Built 1965 Load: 47.2 t ADT: 78,745

COTTONWORTH AVENUE

Fair

Over: WESTERN RUN

0.03 MI W SMITH AVE-FALLS, Baltimore city, MD

Built 1970 Load: 47.2 t ADT: 600

PHOENIX ROAD

Fair

Over: GREENES BRANCH

0.03 MI N PAPER MILL RD, Baltimore city, MD

Built 1967 Load: 47.2 t ADT: 1,237

BUCKHORN ROAD

Fair

Over: BUCKHORN RUN

0.75 MI E OF FRETER ROAD, Carroll, MD

Built 1952 Load: 47.2 t ADT: 694

SUICIDE BRIDGE RD

Fair

Over: WARWICK RIVER

N OF SECRETARY, Dorchester, MD

Built 1992 Load: 47.2 t ADT: 1,082

REICHS FORD ROAD

Fair

Over: MONOCACY RIVER

1.5 MILES SOUTH OF I-70, Frederick, MD

Built 1973 Load: 47.2 t ADT: 3,711

LINKS BRIDGE ROAD

Fair

Over: MONOCACY RIVER

0.18 MI W OF DUBLIN ROAD, Frederick, MD

Built 1980 Load: 47.2 t ADT: 1,620

WEST HEAPS ROAD

Fair

Over: BIG BRANCH

0.5 MILES N OF MD 136, Harford, MD

Built 1990 Load: 47.2 t ADT: 37

FLORAL PARK ROAD

Fair

Over: BURCH BRANCH

1.77 MILES EAST OF MD 223, Prince George's, MD

Built 1952 Load: 47.2 t ADT: 7,103

DEVERS BRANCH ROAD

Fair

Over: GERMAN BRANCH

2 MI FROM MD RTE 405, Queen Anne's, MD

Built 1998 Load: 47.2 t ADT: 221

I-895 NB

Fair

Over: HERBERT RUN

I-895 Milepost 2.0, Baltimore, MD

Built 1957 Load: 47.2 t ADT: 7,507

I-895 SB

Fair

Over: HERBERT RUN

Milepost M2.0, Baltimore, MD

Built 1957 Load: 47.2 t ADT: 8,846

MD 295 SB

Fair

Over: I-895

I-895 Milepost 4.5, Baltimore, MD

Built 1957 Load: 47.2 t ADT: 53,767

IS 95 NB RAMP T

Fair

Over: FROM KEITH AVE SPUR

Milepost M56.6, Baltimore city, MD

Built 1980 Load: 47.2 t ADT: 3,828

I-895

Fair

Over: CHILDS ST RR

Milepost M8.33, Baltimore city, MD

Built 1957 Load: 47.2 t ADT: 82,953

FOSTER AVENUE

Fair

Over: I-895

MILE POINT 12.5, Baltimore city, MD

Built 1957 Load: 47.2 t ADT: 757

US 50 RAMP 6

Fair

Over: BOULTERS WAY

1.38 MI E OF MD 783, Anne Arundel, MD

Built 1953 Load: 47.6 t ADT: 2,833

MD 70

Fair

Over: COLLEGE CREEK

0.42 MI S OF MD 435, Anne Arundel, MD

Built 1954 Load: 47.6 t ADT: 38,762

MD 88

Fair

Over: INDIAN RUN

0.05 MILE WEST OF MD 25, Baltimore, MD

Built 1930 Load: 47.6 t ADT: 4,651

IS 83 NBR

Fair

Over: MD 25 JONES FALLS

0.03 MI S OF MD 25, Baltimore, MD

Built 1962 Load: 47.6 t ADT: 96,870

IS 83 SBR

Fair

Over: MD 25 JONES FALLS

0.03 MI S OF MD 25, Baltimore, MD

Built 1962 Load: 47.6 t ADT: 96,870

MD 130

Fair

Over: NORTH BRANCH

1.50 MILE EAST OF MD 129, Baltimore, MD

Built 1900 Load: 47.6 t ADT: 5,500

IS 195 WBR

Fair

Over: IS 895

0.38 MI N OF AA CO LINE, Baltimore, MD

Built 1987 Load: 47.6 t ADT: 39,015

MD 404 EB

Fair

Over: WATTS CREEK

0.25 MILE WEST OF MD 16, Caroline, MD

Built 1949 Load: 47.6 t ADT: 21,772

IS 270 NB

Fair

Over: BAKER VALLEY RD

2.96 MILES NORTH OF MD 80, Frederick, MD

Built 1950 Load: 47.6 t ADT: 80,340

IS 270 SB

Fair

Over: BAKER VALLEY RD

2.96 MILES NORTH OF MD 80, Frederick, MD

Built 1950 Load: 47.6 t ADT: 80,340

US 15 NBR

Fair

Over: US 40/W. PATRICK STREET

1.09 MILES N OF MD 180, Frederick, MD

Built 1958 Load: 47.6 t ADT: 95,190

US 15 SBR

Fair

Over: US 40/W. PATRICK STREET

1.09 MILES N OF MD 180, Frederick, MD

Built 1958 Load: 47.6 t ADT: 95,190

IS 495X NB

Fair

Over: CABIN JOHN CREEK

0.11 MILE NORTH OF GV 6, Montgomery, MD

Built 1963 Load: 47.6 t ADT: 19,820

IS 495 RAMP E

Fair

Over: KENSINGTON PKWY

0.19 MI E OF MD 185, Montgomery, MD

Built 1964 Load: 47.6 t ADT: 3,685

IS 270

Fair

Over: IS 370 AND RAMP B

1.53 MILE SOUTH OF MD 117, Montgomery, MD

Built 1990 Load: 47.6 t ADT: 216,270

MD 202 SB

Fair

Over: AMTRAK WMATA

0.08 MILE SOUTH OF US 50, Prince George's, MD

Built 1942 Load: 47.6 t ADT: 23,901

IS 70 EB

Fair

Over: MD 66

2.59 MILES EAST OF US 40, Washington, MD

Built 1968 Load: 47.6 t ADT: 58,600

LAUREL RUN ROAD

Fair

Over: LAUREL RUN

1.26 MI W OF MD RTE 935, Allegany, MD

Built 1950 Load: 47.6 t ADT: 94

WISEBURG ROAD

Fair

Over: SECOND MINE BRANCH

100 FT NW WHITEHALL RD, Baltimore, MD

Built 1926 Load: 47.6 t ADT: 2,118

FALLS ROAD

Fair

Over: GUNPOWDER FALLS

1.1 MI S MIDDLETOWN RD, Baltimore, MD

Built 1884 Load: 47.6 t ADT: 300

I-83

Fair

Over: CSX MTA AMTRAK AND NOR

0.03 MI W OF NORTH AVE, Baltimore city, MD

Built 1959 Load: 47.6 t ADT: 127,291

PRATT STREET

Fair

Over: JONES FALLS

0.3 MI E GAY ST, Baltimore city, MD

Built 1988 Load: 47.6 t ADT: 39,933

SMALLWOOD DRIVE WB

Fair

Over: CSX TRANSPORTATION

0.25 mi E MD RTE 925, Charles, MD

Built 1966 Load: 47.6 t ADT: 13,201

WHITAKER MILL ROAD

Fair

Over: HIGH BRIDGE BRANCH

1.4 MILES E OF US 1, Harford, MD

Built 1998 Load: 47.6 t ADT: 1,325

HIGH BRIDGE ROAD

Fair

Over: HORSEPEN BRANCH

1.03 MILES S OF MD 197, Prince George's, MD

Built 1985 Load: 47.6 t ADT: 9,595

DECATUR STREET

Fair

Over: NORTHEAST BRANCH

0.3 MI W OF MD RTE 201, Prince George's, MD

Built 1955 Load: 47.6 t ADT: 9,220

I-895 NBR

Fair

Over: CALVERT ACCESS ROAD S

Milepost M1.8, Baltimore, MD

Built 1957 Load: 47.6 t ADT: 7,507

I- 895 SBR

Fair

Over: CALVERT ACCESS ROAD S

Milepost M1.8, Baltimore, MD

Built 1957 Load: 47.6 t ADT: 8,846

MD 295 NB

Fair

Over: I-895

I-895 Milepost 4.5, Baltimore, MD

Built 1957 Load: 47.6 t ADT: 48,605

Showing 2,101-2,150 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.