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

MD 200 (ICC) WB

Good

Over: Northwest Branch

2.54 Mi West of MD650, Montgomery, MD

Built 2010 Load: 44.4 t ADT: 32,683

MD 140

Good

Over: N BRANCH OF PATAPSCO RIV

ON CARROLL CO LINE, Baltimore, MD

Built 1946 Load: 44.7 t ADT: 60,433

IS 695

Good

Over: MD 26

3.0 MILE NORTH OF IS 70, Baltimore, MD

Built 2012 Load: 44.7 t ADT: 210,600

LITTLE EGYPT RD

Good

Over: CHRISTINA RIVER

0.34 MI N OF MD 273, Cecil, MD

Built 1967 Load: 44.7 t ADT: 2,375

FURNACE ROAD

Good

Over: WEST BRANCH/WINTERS RUN

0.6 MILES E OF MD 152, Harford, MD

Built 1996 Load: 44.7 t ADT: 1,550

US 15B

Good

Over: US 15/US 40

0.39 MILE NORTH OF MD 180, Frederick, MD

Built 1955 Load: 44.9 t ADT: 45,900

MD 24

Good

Over: CSX RAILROAD

0.3 MILE SOUTH OF MD 7, Harford, MD

Built 1995 Load: 44.9 t ADT: 20,242

IS 370 EBR

Good

Over: CRABBS BRANCH WAY

5.84 MILE WEST OF MD 355, Montgomery, MD

Built 2010 Load: 44.9 t ADT: 78,741

MD 195

Good

Over: LONG BRANCH

AT LONG BRANCH PARKWAY, Montgomery, MD

Built 2005 Load: 44.9 t ADT: 13,190

US 1

Good

Over: MD 193

0.21 MILE NORTH OF MD 430, Prince George's, MD

Built 1988 Load: 44.9 t ADT: 47,562

GOVERNOR BRIDGE RO

Good

Over: GREEN BRANCH

1.8 MI WEST OF MD 424, Anne Arundel, MD

Built 2003 Load: 44.9 t ADT: 509

GUNPOWDER ROAD

Good

Over: GRAVES RUN

0.8 MI N BECKLEYSVILLE RD, Baltimore city, MD

Built 1990 Load: 44.9 t ADT: 153

SAINT CHARLES PKWY

Good

Over: KERRICK SWAMP

2.1 MI S OF BILLINGSLEY, Charles, MD

Built 2008 Load: 44.9 t ADT: 1,269

KNOLLS PARKWAY

Good

Over: PLEASANT BRANCH

AT MD RT. 75 INTERSECTION, Frederick, MD

Built 1992 Load: 44.9 t ADT: 1,000

DOLLYHYDE ROAD

Good

Over: DOLLYHYDE CREEK

1.0 MI SOUTH OF MD RTE 26, Frederick, MD

Built 1982 Load: 44.9 t ADT: 186

EYLERS VALLEY ROAD

Good

Over: TRIB. OF OWENS CREEK

0.1 MI NE OF MD RTE 550, Frederick, MD

Built 1983 Load: 44.9 t ADT: 295

MD 200 EB

Good

Over: Little Paint Branch

1.23 MI W of I-95, Prince George's, MD

Built 2011 Load: 44.9 t ADT: 26,084

MD 36

Good

Over: KOONTZ RUN

0.05 MILE NORTH OF MD 657, Allegany, MD

Built 2011 Load: 45.0 t ADT: 8,275

MD 54

Good

Over: MOCKINGBIRD CREEK

2.3 MI E OF US 50, Wicomico, MD

Built 2016 Load: 45.0 t ADT: 2,575

CLAYTON ROAD

Good

Over: I-95

Milepost M75.0, Harford, MD

Built 2022 Load: 45.0 t ADT: 1,212

IS 68 RAMP FT-2

Good

Over: FIFTEENMILE CREEK

RP 2 IS 68 WB TO US 40SC, Allegany, MD

Built 1990 Load: 45.4 t ADT: 9,992

MD 100 EBR

Good

Over: AMTRAK SERVICE ROAD

0.4 MI W OF MD 170, Anne Arundel, MD

Built 1995 Load: 45.4 t ADT: 35,421

MD 100 WBR

Good

Over: AMTRAK SERVICE ROAD

0.4 MI W OF MD 170, Anne Arundel, MD

Built 1995 Load: 45.4 t ADT: 35,421

SAMFORD ROAD

Good

Over: MD 32 WBR

AT MD 32, Anne Arundel, MD

Built 2001 Load: 45.4 t ADT: 21,181

IS 795 SB RAMP 9

Good

Over: MD 940

2.38 MI N OF MD 37, Baltimore, MD

Built 1985 Load: 45.4 t ADT: 7,469

STOCKSDALE AVENUE

Good

Over: IS 795

0.39 MI W OF MD 140, Baltimore, MD

Built 1985 Load: 45.4 t ADT: 299

IS 70 WBR

Good

Over: US 40 EBR(RAMP 5)

0.5 MILE EAST OF MD 180, Frederick, MD

Built 2002 Load: 45.4 t ADT: 94,760

US 29 RAMP D(1)

Good

Over: US 29

1.77 MILES NORTH OF MD 32, Howard, MD

Built 1991 Load: 45.4 t ADT: 10,581

IS 270 RAMP C(5)

Good

Over: IS 370 & RAMP B

1.53 MILE SOUTH OF MD 117, Montgomery, MD

Built 1988 Load: 45.4 t ADT: 15,251

MD 223

Good

Over: PISCATAWAY CREEK

2.40 MILES SOUTH OF MD 4, Prince George's, MD

Built 2012 Load: 45.4 t ADT: 20,322

MD 4 NB

Good

Over: MD 223

1.37 MILES S OF MD 4PB, Prince George's, MD

Built 2014 Load: 45.4 t ADT: 63,050

IS 295 RAMP E

Good

Over: IS 95/495 RMPS B T Q H

0.8 M S OF WASH DCLINE, Prince George's, MD

Built 2003 Load: 45.4 t ADT: 26,853

IS 95/IS 495 RMP J

Good

Over: IS 95 OLL RPS G B T Q H

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

Built 2005 Load: 45.4 t ADT: 7,492

MD 34

Good

Over: BR OF LITTLE ANTIETAM CK

0.94 MILE EAST OF MD 845A, Washington, MD

Built 1956 Load: 45.4 t ADT: 4,951

CHURCH STREET

Good

Over: GEORGES CREEK

0.06 MI W OF MD 936, Allegany, MD

Built 2000 Load: 45.4 t ADT: 461

POT SPRING ROAD

Good

Over: KELLY BRANCH

0.2 MI N. OF GIRDWOOD RD, Baltimore, MD

Built 1980 Load: 45.4 t ADT: 11,227

BEL ALTON NEWTOWN

Good

Over: CLARK RUN

0.8 MI NE MUDD RD, Charles, MD

Built 1998 Load: 45.4 t ADT: 1,760

BRIAN F THOMAS DRI

Good

Over: CHERRY GLADE RUN

0.05 MILES EAST OF US 219, Garrett, MD

Built 2016 Load: 45.4 t ADT: 597

ROBINSON MILL ROAD

Good

Over: BROAD CREEK

0.5 MILES E OF MD 136, Harford, MD

Built 2020 Load: 45.4 t ADT: 73

NORTH AVENUE

Good

Over: BYNUM RUN

0.2 MILES EAST OF MD 924, Harford, MD

Built 2011 Load: 45.4 t ADT: 714

RIVER ROAD

Good

Over: BIG ANNEMESSEX RIVER

1.5 MI N OF KINGSTON ROAD, Somerset, MD

Built 1988 Load: 45.4 t ADT: 484

I95N RAMP TO I695W

Good

Over: I-695 I-95 INTERCHANGE

I-95/I-695 Interchange, Baltimore, MD

Built 2008 Load: 45.4 t ADT: 22,062

MD 200 (ICC) EB

Good

Over: Shady Grove Road

4.86 MI W. OF MD 97, Montgomery, MD

Built 2010 Load: 45.4 t ADT: 31,652

Ramp WN to US29 NB

Good

Over: MD 200 Ramp NW

0.4 mi S Briggs Chaney Rd, Montgomery, MD

Built 2011 Load: 45.4 t ADT: 309

GEORGES CREEK ROAD

Good

Over: GEORGES RUN

1.3 MI E FALLS RD, Baltimore city, MD

Built 2011 Load: 45.7 t ADT: 180

BLAKE RD

Good

Over: LITTLE ELK CREEK

0.46 MI E OF LI ELK CK RD, Cecil, MD

Built 2010 Load: 45.7 t ADT: 417

MD 144

Good

Over: IS 68

0.16 MILE EAST OF US 220, Allegany, MD

Built 1990 Load: 45.8 t ADT: 1,121

IS 695 IL & RAMP

Good

Over: AVONDALE ROAD

0.44 MI E OF MD 147, Baltimore, MD

Built 1993 Load: 45.8 t ADT: 83,476

IS 695 OL

Good

Over: AVONDALE ROAD

0.44 MI E OF MD 147, Baltimore, MD

Built 1993 Load: 45.8 t ADT: 83,476

MD 159

Good

Over: CRANBERRY RUN

0.22 MILE SOUTH OF US 40, Harford, MD

Built 2008 Load: 45.8 t ADT: 4,980

Showing 4,151-4,200 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.