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

SELING AVENUE

Fair

Over: REDHOUSE RUN

0.2 MI N PHILADELPHIA RD, Baltimore, MD

Built 1955 Load: 51.2 t ADT: 6,499

I-83 SB OFF-RAMP

Fair

Over: DRUID LAKE DR WESTBOUND

SB I-83 AT WB DRUID LK DR, Baltimore city, MD

Built 1959 Load: 51.2 t ADT: 26,030

DRUID PARK LAKE DR

Fair

Over: I-83 & NORFOLK RAILROAD

0.4 MI N OF NORTH AVE, Baltimore city, MD

Built 1962 Load: 51.2 t ADT: 21,400

KEITH AVENUE

Fair

Over: BROENING HIGHWAY

KEITH AVE OV BROENING HWY, Baltimore city, MD

Built 1973 Load: 51.2 t ADT: 1,849

MOUNT STREET

Fair

Over: STONE RUN

0.21 MI S OF US 1, Cecil, MD

Built 1960 Load: 51.2 t ADT: 1,162

CHARLES STREET

Fair

Over: WEST BRANCH/WINTERS RUN

0.6 MILES NW OF MD 165, Harford, MD

Built 1965 Load: 51.2 t ADT: 280

CLUB HOLLOW ROAD

Fair

Over: BROAD RUN

0.2 MI W OF EDWARDS FERRY, Montgomery, MD

Built 1930 Load: 51.2 t ADT: 443

BLACK ROCK RD

Fair

Over: GREAT SENECA CREEK

0.7 MI N OF JCT SR 28, Montgomery, MD

Built 1965 Load: 51.2 t ADT: 373

MUDDY HOLE ROAD

Fair

Over: BROAD CREEK

0.5 MI E JESTERVILLE RD, Wicomico, MD

Built 2004 Load: 51.2 t ADT: 58

HAZELWOOD AVENUE

Fair

Over: I-95

0.5 MI S OF MD 588, Baltimore, MD

Built 1996 Load: 51.2 t ADT: 12,427

IS 95 RAMP K

Fair

Over: CSX RACE ST McCOMAS ST

Milepost M55.3, Baltimore city, MD

Built 1979 Load: 51.2 t ADT: 10,039

I-95

Fair

Over: BIG ELK CREEK

1.9 MI S OF MD LINE, Cecil, MD

Built 1963 Load: 51.2 t ADT: 78,625

US 40

Fair

Over: HONEYGO RUN

0.36 MILE EAST OF MD 43, Baltimore, MD

Built 1935 Load: 51.7 t ADT: 39,760

MD 129

Fair

Over: JONES FALLS

0.27 MI S OF MD 130, Baltimore, MD

Built 1957 Load: 51.7 t ADT: 8,700

IS 695

Fair

Over: MTA LIGHT RAIL

0.2 MILE NORTH OF IS 83, Baltimore, MD

Built 1955 Load: 51.7 t ADT: 205,485

US 340 EBR

Fair

Over: US 15 SBR

4.33 MILES EAST OF MD 180, Frederick, MD

Built 1966 Load: 51.7 t ADT: 32,282

MD 190

Fair

Over: CABIN JOHN CREEK

0.74 MILE EAST OF MD 191, Montgomery, MD

Built 1974 Load: 51.7 t ADT: 22,022

MD 214

Fair

Over: HONEY BRANCH

0.59 M W OF AA CO LINE, Prince George's, MD

Built 1947 Load: 51.7 t ADT: 10,771

IS 70 EB

Fair

Over: NORFOLK & SOUTHERN RR

0.52 MILE EAST OF MD 632, Washington, MD

Built 1968 Load: 51.7 t ADT: 33,892

IS 70 WB

Fair

Over: NORFOLK SOUTHERN RAILROA

0.52 MILE EAST OF MD 632, Washington, MD

Built 1968 Load: 51.7 t ADT: 34,890

IRON RAIL STREET

Fair

Over: JENNINGS RUN

0.02 MI S OF MD 36, Allegany, MD

Built 1935 Load: 51.7 t ADT: 1,224

ESSEX FARM ROAD

Fair

Over: ROLAND RUN

0.4 MI N OF JOPPA ROAD, Baltimore, MD

Built 1959 Load: 51.7 t ADT: 300

SOUTHERN CROSS DRI

Fair

Over: TRIBUTARY TO GWYNNS FALL

0.03 MI N OF ALTER ST, Baltimore, MD

Built 1955 Load: 51.7 t ADT: 4,436

HAMMERSHIRE ROAD

Fair

Over: ROACHES RUN

HAMMERSHIRE RD 0.11, Baltimore, MD

Built 1984 Load: 51.7 t ADT: 6,330

SPOOKS HILL ROAD

Fair

Over: FROG HOLLOW RUN

1.3 MI W MIDDLETOWN RD, Baltimore city, MD

Built 2001 Load: 51.7 t ADT: 101

PROVIDENCE ROAD

Fair

Over: LITTLE ELK CREEK

0.54 MI W OF MD 213, Cecil, MD

Built 1981 Load: 51.7 t ADT: 639

IRON HILL ROAD

Fair

Over: PERSIMMON RUN

0.52 MI S OF MD 279, Cecil, MD

Built 1978 Load: 51.7 t ADT: 1,389

CROUSE MILL ROAD

Fair

Over: BIG PIPE CREEK

.15 MI S OF SHARRETT ROAD, Carroll, MD

Built 1976 Load: 51.7 t ADT: 668

IJAMSVILLE ROAD

Fair

Over: BUSH CREEK

1.2 MI N OF MD RTE 80, Frederick, MD

Built 2016 Load: 51.7 t ADT: 3,667

SWANTON HILL ROAD

Fair

Over: CRABTREE CREEK

0.4 M E INT MD RTE 495, Garrett, MD

Built 1976 Load: 51.7 t ADT: 1,058

QUARRY ROAD

Fair

Over: TRIBUTARY TO DEEP CREEK

0.2 MI NORTH OF RTE 219, Garrett, MD

Built 2007 Load: 51.7 t ADT: 115

PERSIMMON TREE ROA

Fair

Over: CONGRESSIONAL CC UNDERPA

0.4 MI N OF I-495, Montgomery, MD

Built 1977 Load: 51.7 t ADT: 2,685

ODELL ROAD

Fair

Over: INDIAN CREEK

0.12 MILES WEST OF MD 201, Prince George's, MD

Built 2000 Load: 51.7 t ADT: 2,036

I-395 RAMP G

Fair

Over: MIDDLE BRANCH

Milepost M0.8, Baltimore city, MD

Built 1979 Load: 51.7 t ADT: 48,089

I-95

Fair

Over: B&O RR

Milepost M104.7, Cecil, MD

Built 1963 Load: 51.7 t ADT: 78,625

RIVER PARK ROAD

Fair

Over: C&O CANAL

Route 68 to Salisbury Str, Washington, MD

Built 1879 Load: 51.7 t ADT: 200

BW PARKWAY (RAMP C

Fair

Over: MD ROUTE 197 (EBL)

1.9 MILES NORTH OF MD ROU, Prince George's, MD

Built 2001 Load: 51.7 t ADT: 20,000

MD 648H

Fair

Over: MD 100 EBR

0.72 MILE SOUTH OF MD 177, Anne Arundel, MD

Built 1971 Load: 52.2 t ADT: 5,802

MD 25

Fair

Over: JONES FALLS

0.33 MILE SOUTH OF MD 25A, Baltimore, MD

Built 1973 Load: 52.2 t ADT: 9,121

TRAPPE ROAD

Fair

Over: MD 695

0.38 MI S OF MD 151, Baltimore, MD

Built 1970 Load: 52.2 t ADT: 999

IS 595

Fair

Over: MD 704

0.73 MILE EAST OF IS 95, Prince George's, MD

Built 1955 Load: 52.2 t ADT: 113,590

US 301 SB

Fair

Over: UNICORN BRANCH

0.48 M S OF KENT CO LINE, Queen Anne's, MD

Built 1967 Load: 52.2 t ADT: 10,370

29TH STREET

Fair

Over: I-83

0.5 MI N OF NORTH AVE, Baltimore city, MD

Built 1962 Load: 52.2 t ADT: 23,300

MAYFIELD AVENUE

Fair

Over: DEEP RUN

0.2 MI W OF MD RTE 103, Howard, MD

Built 1945 Load: 52.2 t ADT: 5,788

INDIANOLA DRIVE

Fair

Over: CSXT RR & WMATA METRO

1 MI E OF MD RTE 355, Montgomery, MD

Built 1981 Load: 52.2 t ADT: 1,075

COLUMBIA PARK ROAD

Fair

Over: BEAVERDAM CREEK

0.17 MI E OF US 50, Prince George's, MD

Built 1977 Load: 52.2 t ADT: 43,372

HALFWAY BOULEVARD

Fair

Over: UNDERPASS WAY-VALLEY MAL

0.32 MI E OF I 81, Washington, MD

Built 1971 Load: 52.2 t ADT: 16,373

WILSON BOULEVARD

Fair

Over: NORFOLK SOUTHERN RAILROA

150 FT W OF VIRGINIA AVE, Washington, MD

Built 1983 Load: 52.2 t ADT: 9,800

RIVERSIDE DRIVE

Fair

Over: TONY TANK CREEK

.75 MI S SALSBRY CTY LINE, Wicomico, MD

Built 1999 Load: 52.2 t ADT: 3,565

IS 595

Fair

Over: SOUTH RIVER

0.94 M W OF BR NO 0203100, Anne Arundel, MD

Built 1950 Load: 52.6 t ADT: 101,670

Showing 2,351-2,400 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.