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 61 (CANAL PARKW

Good

Over: NORTH BRANCH OF POTOMAC

ON WEST VIRGINIA, Allegany, MD

Built 1992 Load: 61.7 t ADT: 11,501

LILLIAN HOLT DRIVE

Good

Over: IS 695

0.62 MILE NORTH OF MD 588, Baltimore, MD

Built 2008 Load: 61.7 t ADT: 13,000

ROY SHAFER ROAD

Good

Over: CONE BRANCH

0.37 MI N OF BRDG 0306, Frederick, MD

Built 1982 Load: 61.7 t ADT: 105

MD 151 (SPARROWS P

Good

Over: MD 151B AND TRADEPOINT R

0.1 MI S. OF MD 158, Baltimore, MD

Built 1954 Load: 61.9 t ADT: 21,000

MD 260D-MT HARMONY

Good

Over: MD 260

0.14 MILE WEST OF MD 260, Calvert, MD

Built 2005 Load: 62.1 t ADT: 7,890

US 29

Good

Over: IS 495

0.34 MILE SOUTH OF MD 193, Montgomery, MD

Built 1959 Load: 62.1 t ADT: 56,842

MD 5R

Good

Over: MD 5 (BRANCH AVENUE)

0.3 MI S OF IS 95, Prince George's, MD

Built 1996 Load: 62.1 t ADT: 5,031

IS 70 WB

Good

Over: PENNSYLVANIA AVE

0.24 MILE EAST OF US 522, Washington, MD

Built 1965 Load: 62.1 t ADT: 37,440

RYE STREET

Good

Over: BRADDOCK RUN

0.20 MI W OF US 40 ALT, Allegany, MD

Built 2007 Load: 62.1 t ADT: 1,140

GUILFORD ROAD

Good

Over: DORSEY RUN

0.58 MI S OF HO CO LINE, Anne Arundel, MD

Built 1984 Load: 62.1 t ADT: 11,711

HARRIS MILL ROAD

Good

Over: DEER CREEK

0.59 MI E OF MASON-DIX RD, Baltimore, MD

Built 2006 Load: 62.1 t ADT: 298

BUSINESS PARK DRIV

Good

Over: TRIBUTARY TO ROLAND RUN

0.4 MI S OF TIMONIUM RD, Baltimore, MD

Built 1992 Load: 62.1 t ADT: 5,516

CHARLES STREET ON-

Good

Over: AMTRAK PROPERTY

AT CHARLES ST. OVER I-83, Baltimore city, MD

Built 2003 Load: 62.1 t ADT: 10,850

LUMS ROAD

Good

Over: NORTHEAST CREEK

0.49 MI E OF MD 272, Cecil, MD

Built 1992 Load: 62.1 t ADT: 1,586

FATHER HURLEY BOUL

Good

Over: I-270

0.5MI E. OF CRYSTAL RK DR, Montgomery, MD

Built 1995 Load: 62.1 t ADT: 14,319

FATHER HURLEY BOUL

Good

Over: I-270

.5 MI E. OF CRYSTAL RK DR, Montgomery, MD

Built 1995 Load: 62.1 t ADT: 13,713

BIKLE ROAD

Good

Over: LITTLE ANTIETAM CREEK

0.6 MI NE OF MD RTE 64, Washington, MD

Built 1998 Load: 62.1 t ADT: 1,091

MD 736

Good

Over: SAND SPRING RUN

0.81 MI N OF IS 68, Allegany, MD

Built 1975 Load: 62.6 t ADT: 4,531

MD 97

Good

Over: TUCKERS BRANCH

1.02 M S OF BR NO 0306400, Carroll, MD

Built 1976 Load: 62.6 t ADT: 8,770

MUDDY BRANCH RD EB

Good

Over: IS 270 & NB C-D ROAD

0.73 MI E OF MD 117, Montgomery, MD

Built 1989 Load: 62.6 t ADT: 14,642

IS 495 OL

Good

Over: PAINT BRANCH

1.42 M E OF MONTGOMERY CO, Prince George's, MD

Built 1964 Load: 62.6 t ADT: 139,680

MD 304

Good

Over: GERMAN BRANCH

1.26 MILES E OF MD 481, Queen Anne's, MD

Built 2002 Load: 62.6 t ADT: 3,400

DAIRY ROAD

Good

Over: OWL BRANCH

1MI S. OF I-83 EXIT33, Baltimore, MD

Built 2011 Load: 62.6 t ADT: 727

UNION BRIDGE ROAD

Good

Over: CHERRY BRANCH

UNION BRIDGE ROAD, Carroll, MD

Built 1990 Load: 62.6 t ADT: 1,034

THIRD STREET

Good

Over: CSX RAILROAD

0.1 MI S. OF RTE 219, Garrett, MD

Built 2009 Load: 62.6 t ADT: 1,302

BRUCEVILLE ROAD

Good

Over: MILES CREEK

8 MI SE OF EASTON, Talbot, MD

Built 2005 Load: 62.6 t ADT: 531

IS 95 RAMP J

Good

Over: GUSRYAN ST

500 FT S OF DUNDALK AVE, Baltimore city, MD

Built 1976 Load: 62.6 t ADT: 1,851

RESERVOIR ROAD

Good

Over: MINOR TRIB OF MILL CREEK

0.5 MI E OF MD 222, Cecil, MD

Built 2016 Load: 62.9 t ADT: 874

MD 32 WB

Good

Over: GUILFORD ROAD

1.0 MILE NORTH OF IS 95, Howard, MD

Built 1980 Load: 63.0 t ADT: 91,311

IS 95/IS 495 RMP 7

Good

Over: MD 5

1.37 MILE SOUTH OF MD 414, Prince George's, MD

Built 2008 Load: 63.0 t ADT: 22,464

MD 244

Good

Over: MOLL DYERS RUN

1.21 MILES WEST OF MD 5, St. Mary's, MD

Built 1925 Load: 63.0 t ADT: 2,190

OLD NEW WINDSOR RD

Good

Over: DICKENSON RUN

0.02 MI S OF NEW WINDSOR, Carroll, MD

Built 1987 Load: 63.0 t ADT: 1,058

CLARKSBURG ROAD

Good

Over: BENNETT CREEK

2.2 MI SW OF JCT SR 80, Montgomery, MD

Built 2011 Load: 63.0 t ADT: 4,123

OLD FURNACE ROAD

Good

Over: NASSAWANGO CREEK

1.10 MI SW OF MD 12, Worcester, MD

Built 2004 Load: 63.0 t ADT: 450

FIVE MILE BRANCH R

Good

Over: COONFOOT BRANCH

0.76 MI N OF US RTE 113, Worcester, MD

Built 2017 Load: 63.2 t ADT: 128

MD 623

Good

Over: BROAD CREEK

2.63 MI S OF PA LINE, Harford, MD

Built 1998 Load: 63.5 t ADT: 1,120

MD 100

Good

Over: OLD MONT. RD & DEEP RUN

0.62 MILE WEST OF MD 103, Howard, MD

Built 1998 Load: 63.5 t ADT: 82,092

IS 270 SB

Good

Over: MD 109 LITTLE BENNETT C

0.22 MI S OF FREDERICK CO, Montgomery, MD

Built 1950 Load: 63.5 t ADT: 87,230

I-370 RAMP L(7)

Good

Over: I-370 RAMP M(3)

.23 MI E OF MD 355, Montgomery, MD

Built 2010 Load: 63.5 t ADT: 3,953

TOWN CREEK ROAD

Good

Over: TOWN CREEK

1.95 MI N OF L TOWN CK RD, Allegany, MD

Built 2001 Load: 63.5 t ADT: 525

ARTIE KEMP ROAD

Good

Over: TOWN BRANCH

0.2 MI WEST OF MD 75, Frederick, MD

Built 1982 Load: 63.5 t ADT: 311

GREENBELT STATION

Good

Over: BRANCHVILLE ROAD

.04 MILES N OF MD 193, Prince George's, MD

Built 2008 Load: 63.5 t ADT: 850

IS 68 EBR

Good

Over: STREET ROAD

0.92 M E OF BR NO 0114600, Allegany, MD

Built 1990 Load: 63.9 t ADT: 19,030

MD 144

Good

Over: IS 68

0.48 M E OF BR NO 0114700, Allegany, MD

Built 1990 Load: 63.9 t ADT: 1,121

MD 100 WBR

Good

Over: IS 97 RAMP 1 A

I-97 MD 100 INTERCHANGE, Anne Arundel, MD

Built 1996 Load: 63.9 t ADT: 75,406

IS 795 RAMP 9

Good

Over: MD 940 RAMP 7

@ IS 795 & MD 940, Baltimore, MD

Built 1985 Load: 63.9 t ADT: 2,633

MD 103

Good

Over: MD 100

1.35 MILE NORTH OF I-95, Howard, MD

Built 1997 Load: 63.9 t ADT: 12,911

MD 500

Good

Over: NORTHWEST BRANCH

0.10 MILE EAST OF MD 501, Prince George's, MD

Built 1934 Load: 63.9 t ADT: 41,631

BRIDGE STREET

Good

Over: BRADDOCK RUN

0.14 MI NW OF US 40 ALT, Allegany, MD

Built 2009 Load: 63.9 t ADT: 275

ST. FRANCIS DRIVE

Good

Over: TRIBUTARY TO SEVERN RUN

0.19 MI. N. OF MD 174, Anne Arundel, MD

Built 2018 Load: 63.9 t ADT: 669

Showing 4,701-4,750 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.