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

I-370 RAMP - B

Good

Over: CRABBS BRANCH WAY

0.56 MI E OF MD 355, Montgomery, MD

Built 2009 Load: 41.7 t ADT: 3,953

MD 362

Good

Over: MONIE CREEK

3.31 MILES WEST OF US 13, Somerset, MD

Built 2009 Load: 41.7 t ADT: 1,622

US 113

Good

Over: CHURCH BRANCH

0.312 MILE N OF MD 589, Worcester, MD

Built 2001 Load: 41.7 t ADT: 14,192

OWINGS MILLS BOULE

Good

Over: RED RUN

1 MI SOUTH OF IS 795, Baltimore, MD

Built 1990 Load: 41.7 t ADT: 36,114

NICODEMUS ROAD

Good

Over: LIBERTY RESERVOIR

0.4 MI W IVY MILL RD, Baltimore, MD

Built 2011 Load: 41.7 t ADT: 3,510

OLD ANNAPOLIS ROAD

Good

Over: LINGANORE CREEK

0.9 MI W OF MD 75, Frederick, MD

Built 1989 Load: 41.7 t ADT: 2,931

SANNER ROAD

Good

Over: TRIB OF MIDDLE PATUXENT

0.3 MI S PINDELL SCHOOL, Howard, MD

Built 2003 Load: 41.7 t ADT: 2,493

MD 404 ALT

Good

Over: NORWICH CREEK

0.25 MI E OF MD 404, Talbot, MD

Built 1995 Load: 41.7 t ADT: 280

LEITERS MILL ROAD

Good

Over: ANTIETAM CREEK

0.2 MI N OF MD RTE 60, Washington, MD

Built 1839 Load: 41.7 t ADT: 1,470

SECOND LEVEL ENTRA

Good

Over: NORTH END OF CONSOLIDATE

CRCF - BWI AIRPORT, Anne Arundel, MD

Built 2003 Load: 41.7 t ADT: 113

MD 200 (ICC) WB

Good

Over: TRIBUTARY OF NBRC

1.34 MI W OF MD 97, Montgomery, MD

Built 2010 Load: 41.7 t ADT: 30,827

EMORY LANE

Good

Over: MD 200 (ICC)

0.93 MI W OF MD 97, Montgomery, MD

Built 2010 Load: 41.7 t ADT: 8,133

MD200 Ramp I-A

Good

Over: MD200 & I-95

MD200 EB RAMP I-A TO I-95, Prince George's, MD

Built 2010 Load: 41.7 t ADT: 12,656

OLD HARFORD ROAD

Good

Over: IS 695

0.09 MI N OF MD 41, Baltimore, MD

Built 2017 Load: 41.8 t ADT: 15,925

GAS HOUSE PIKE

Good

Over: LINGANORE CREEK

1.0 MI W OF CNTRL CHURCH, Frederick, MD

Built 2021 Load: 41.8 t ADT: 11,825

LEWISTOWN ROAD

Good

Over: FISHING CREEK

0.3 MI E OF HESSONG BRDG, Frederick, MD

Built 1920 Load: 41.8 t ADT: 466

BRADSHAW ROAD

Good

Over: I-95

Milepost M71.7, Baltimore, MD

Built 2020 Load: 41.8 t ADT: 2,590

MD 464 (POINT OF R

Good

Over: LITTLE CATOCTIN CREEK

2.16 MILES EAST OF MD 17, Frederick, MD

Built 2020 Load: 42.1 t ADT: 4,400

SPINE RD

Good

Over: MD 5

9 MI S OF I95/495, Prince George's, MD

Built 2018 Load: 42.1 t ADT: 17,425

MD 381

Good

Over: TIMOTHY BRANCH

325 North of Kathleen La, Prince George's, MD

Built 2018 Load: 42.1 t ADT: 9,000

IS 70 EB

Good

Over: IS 70 RAMP A

0.01 MILE WEST OF US 522, Washington, MD

Built 1965 Load: 42.1 t ADT: 19,400

GORE MILL ROAD

Good

Over: LITTLE FALLS

1.4 MI NE MIDDLETOWN RD, Baltimore, MD

Built 2018 Load: 42.1 t ADT: 193

Harford Road

Good

Over: Herring Run Trail

0.4 MI S ARGONNE DRIVE, Baltimore city, MD

Built 2022 Load: 42.1 t ADT: 20,994

CHRISTOPHERS CROSS

Good

Over: TRIBUTARY 89

0.2 MI E OF WATER MARTZ R, Frederick, MD

Built 2019 Load: 42.1 t ADT: 4,430

ELMHIRST PARKWAY

Good

Over: ROCK CREEK TRIBUTARY

0.3 MI N OF CEDAR LANE, Montgomery, MD

Built 2016 Load: 42.1 t ADT: 718

US 40 SCN

Good

Over: IS 68 & SNIB HOLLOW RUN

0.03 M E OD MANN ROAD, Allegany, MD

Built 1988 Load: 42.2 t ADT: 281

IS 68 EBR

Good

Over: TOWN CREEK

0.24 M E OF BR NO 0114000, Allegany, MD

Built 1990 Load: 42.2 t ADT: 18,551

IS 68 WBR

Good

Over: TOWN CREEK

0.24 M E OF BR NO 0114000, Allegany, MD

Built 1990 Load: 42.2 t ADT: 18,551

MD 665 WBR

Good

Over: IS 595

0.41 MILE W OF RIVA ROAD, Anne Arundel, MD

Built 1991 Load: 42.2 t ADT: 61,602

MD 100M

Good

Over: MD 100

0.13 MILE NORTH OF MD 103, Anne Arundel, MD

Built 1996 Load: 42.2 t ADT: 9,784

MD 725

Good

Over: WESTERN BRANCH

0.41 MILE EAST OF MD 717, Prince George's, MD

Built 1992 Load: 42.2 t ADT: 15,371

MD 202F (ARENA DR)

Good

Over: IS 95

.25 MI NW OF USAIR ARENA, Prince George's, MD

Built 1997 Load: 42.2 t ADT: 18,790

US 50 EB

Good

Over: US 13

3.197 MILES W OF US 50BU, Wicomico, MD

Built 2001 Load: 42.2 t ADT: 18,971

BIG FALLS ROAD

Good

Over: LITTLE FALLS

125 FT NE OF BERNOUDY, Baltimore, MD

Built 1986 Load: 42.2 t ADT: 1,405

GWYNNBROOK AVENUE

Good

Over: ROACHES RUN

0.38 MI E OF MD 140, Baltimore, MD

Built 1976 Load: 42.2 t ADT: 4,304

MOUNT STREET

Good

Over: AMTRAK RAILROAD

0.1 MI E OF MONROE ST, Baltimore city, MD

Built 1997 Load: 42.2 t ADT: 3,077

CARPENTERS PT ROAD

Good

Over: UNNAMED STREAM

0.68 MI S OF MD 267, Cecil, MD

Built 2013 Load: 42.2 t ADT: 755

LITTLE SENECA PKWY

Good

Over: LITTLE SENECA CREEK TRIB

0.5 MI. E. OF MD 355, Montgomery, MD

Built 2011 Load: 42.2 t ADT: 10,542

EARTH CARE ROAD

Good

Over: CONOCOCHEAGUE CREEK

0.4 MI NORTH OF US 40, Washington, MD

Built 2000 Load: 42.2 t ADT: 721

I-895 SB

Good

Over: HERRING RUN

MILEPOST M13.7, Baltimore city, MD

Built 1957 Load: 42.2 t ADT: 35,344

Ramp NW to MD200WB

Good

Over: US29 Ramp NB&SE MD200

0.4 Mi S of Briggs Chaney, Montgomery, MD

Built 2011 Load: 42.2 t ADT: 2,294

ROWLAND ROAD

Good

Over: BASIN RUN

0.26 MI S OF COLORA RD, Cecil, MD

Built 2011 Load: 42.4 t ADT: 331

RAZOR STRAP ROAD

Good

Over: STONY RUN

0.47 MI W OF US 40, Cecil, MD

Built 2017 Load: 42.4 t ADT: 1,613

STAFFORD ROAD

Good

Over: DEER CREEK

0.03 MI N OF CRAIGS CR RD, Harford, MD

Built 1951 Load: 42.4 t ADT: 469

NEW PARK ROAD

Good

Over: ISLAND BRANCH

0.78 MI. NE OF ROUTE 23, Harford, MD

Built 2019 Load: 42.4 t ADT: 395

SNOUFFER SCHOOL RO

Good

Over: CABIN BRANCH

1.3 MI N OF MD124, Montgomery, MD

Built 2020 Load: 42.4 t ADT: 18,315

MD 478

Good

Over: BR OF POTOMAC RIVER

1.78 MI S. EAST OF MD 180, Frederick, MD

Built 2019 Load: 42.6 t ADT: 2,471

IS 595 RAMP D(7)

Good

Over: IS 95 IS 595 RAMP B(3)

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

Built 1990 Load: 42.6 t ADT: 19,423

IS 95/IS 495 RMP G

Good

Over: IS 95/IS 495 RAMP B

2.0 MILE WEST OF MD 210, Prince George's, MD

Built 2005 Load: 42.6 t ADT: 191,981

OLD COURT ROAD

Good

Over: SCOTTS LEVEL BRANCH

300 FEET W OF WINANDS RD, Baltimore, MD

Built 1964 Load: 42.6 t ADT: 1,115

Showing 4,001-4,050 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.