Total Bridges
5,484
Public highway bridges in Maryland
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
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.
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
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
NM
New Mexico
4.51% top marginal rate
MD
Maryland
4.56% top marginal rate
OR
Oregon
4.61% top marginal rate
CT
Connecticut
4.72% top marginal rate
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
PoorOver: CSXT RAILROAD
0.2 MI W OF CUMBERLAND ST, Allegany, MD
Built 1930 Load: 0.0 t ADT: 110
CUMBERLAND STREET
PoorOver: CSXT RAILROAD
0.6 MI E OF WASHINGTON ST, Allegany, MD
Built 1929 Load: 0.0 t ADT: 110
MILL STREET
PoorOver: ROCK RUN
.01 MI S. OF RACE STREET, Cecil, MD
Built 1940 Load: 0.0 t ADT: 100
BACK LANDING ROAD
PoorOver: HUNTING CREEK
ON CAROLINE COUNTY LINE, Dorchester, MD
Built 1941 Load: 0.0 t
TALBOT AVENUE
PoorOver: CSXT RAILROAD
0.2 MI E OF MICHIGAN AVE, Montgomery, MD
Built 1918 Load: 0.0 t ADT: 1,430
TAYLOR MILL ROAD
PoorOver: 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
WAVERLY STREET
GoodOver: MD 36
0.38 MI N OF MD 825, Allegany, MD
Built 1975 Load: 99.9 t ADT: 529
MD 144
GoodOver: LITTLE PINE LICK HOLLOW
NEXT TO BR # 1089, Allegany, MD
Built 1990 Load: 99.9 t ADT: 1,121
US 40 SCN
GoodOver: PRATT HOLLOW
0.04 M S OF BR NO 0113300, Allegany, MD
Built 1990 Load: 99.9 t ADT: 284
MD 144
GoodOver: PRATT HOLLOW
0.28 M W OF BR NO 0113800, Allegany, MD
Built 1990 Load: 99.9 t ADT: 1,121
MD 948Y
GoodOver: SNIB HOLLOW
0.04 M S OF WASH CO LINE, Allegany, MD
Built 1988 Load: 99.9 t ADT: 99
IS 68 RAMP A(4)
GoodOver: WEST TRIB FLINTSTONE CRE
0.16 M W OF BR NO 0107700, Allegany, MD
Built 1990 Load: 99.9 t ADT: 999
MD 450
GoodOver: NORTH RIVER
2.89 MILE EAST OF MD 424, Anne Arundel, MD
Built 1989 Load: 99.9 t ADT: 6,927
MD 258
GoodOver: TRACYS CREEK
1.07 MILE EAST OF MD 2, Anne Arundel, MD
Built 1963 Load: 99.9 t ADT: 8,882
IS 97
GoodOver: BR OF BACON RIDGE BRANCH
1.68 MILES N OF MD 450, Anne Arundel, MD
Built 1987 Load: 99.9 t ADT: 91,300
IS 595 RAMP CC/3
GoodOver: IS 97 SBR
0.17 MI N OF IS 595, Anne Arundel, MD
Built 1994 Load: 99.9 t ADT: 5,423
MD 32 WBR
GoodOver: AMTRAK
0.41 MILE WEST OF MD 170, Anne Arundel, MD
Built 1991 Load: 99.9 t ADT: 53,532
MD 295 RAMP C
GoodOver: BR OF LITTLE PATUXENT RI
MD32 & CANINE RD, Anne Arundel, MD
Built 1991 Load: 99.9 t ADT: 1,440
MD 32
GoodOver: ROGUE HABOR BRANCH
0.91 M N OF PEPPER ROAD, Anne Arundel, MD
Built 1990 Load: 99.9 t ADT: 50,192
MD 198
GoodOver: TRIB TO LITTLE PATUXENT
0.793 MILE WEST OF MD 32, Anne Arundel, MD
Built 2002 Load: 99.9 t ADT: 24,452
US 1
GoodOver: GUNPOWDER FALLS
0.91 M S OF MT VISTA ROAD, Baltimore, MD
Built 1991 Load: 99.9 t ADT: 3,393
MD 131
GoodOver: ROLAND RUN
0.85 MILE WEST OF IS 83, Baltimore, MD
Built 1979 Load: 99.9 t ADT: 9,381
IS 795
GoodOver: GWYNNS FALLS
0.22 M N OF BR NO 0331700, Baltimore, MD
Built 1984 Load: 99.9 t ADT: 110,982
MD 43
GoodOver: TRIB TO WINDLASS RUN
0.9 M E OF BIRD RIVER RD, Baltimore, MD
Built 2005 Load: 99.9 t ADT: 16,200
MD 2 & 4
GoodOver: QUAKER SWAMP
0.34 MILE SOUTH OF MD 765, Calvert, MD
Built 1987 Load: 99.9 t ADT: 26,941
MD 287
GoodOver: BROADWAY BRANCH
0.465 M W OF JACKSON LANE, Caroline, MD
Built 1999 Load: 99.9 t ADT: 2,021
MD 854A
GoodOver: LITTLE MORGAN RUN
1.05 MI N OF BUSHEY RD, Carroll, MD
Built 1976 Load: 99.9 t ADT: 647
MD 5 NBR
GoodOver: TRIB TO JORDAN SWAMP
.14 MILE SOUTH OF MD 5 BU, Charles, MD
Built 1964 Load: 99.9 t ADT: 38,312
MD 17
GoodOver: DRY RUN
3.10 MI S OF WASH CO, Frederick, MD
Built 1981 Load: 99.9 t ADT: 3,480
MD 24
GoodOver: BR OF DEER CREEK
0.29 M S OF COEN ROAD, Harford, MD
Built 1986 Load: 99.9 t ADT: 3,193
MD 24 & 24E
GoodOver: HEAVENLY WATERS
0.19 MI S OF US 1, Harford, MD
Built 1987 Load: 99.9 t ADT: 23,140
MD 24
GoodOver: PED. AND HORSE TUNNEL
0.45 MILE NORTH OF US 1BU, Harford, MD
Built 1987 Load: 99.9 t ADT: 21,480
MD 100
GoodOver: TRIB TO RED HILL BRANCH
.25 M E OF LONG GATE PKWY, Howard, MD
Built 1993 Load: 99.9 t ADT: 80,680
MD 100
GoodOver: RED HILL BRANCH
0.6 M E OF LONG GATE PKWY, Howard, MD
Built 1993 Load: 99.9 t ADT: 80,680
MD 100M (COCA COLA
GoodOver: BRANCH OF DEEP RUN
0.06 M N OF AA CO LINE, Howard, MD
Built 1998 Load: 99.9 t ADT: 13,792
MD 28
GoodOver: MUDDY BRANCH
0.03 MILE EAST OF MD 899A, Montgomery, MD
Built 2004 Load: 99.9 t ADT: 24,594
MD 108
GoodOver: TRIB TO JAMES CREEK
1.24 MILES EAST OF MD 97, Montgomery, MD
Built 1994 Load: 99.9 t ADT: 22,100
MD 124
GoodOver: WHETSTONE RUN
1.23 MILE NORTH OF MD 355, Montgomery, MD
Built 1990 Load: 99.9 t ADT: 23,940
IS 270 RAMP L(1)
GoodOver: GUNNERS BRANCH
IS 270/MIDDLEBROOK INTER, Montgomery, MD
Built 1991 Load: 99.9 t ADT: 6,945
CO 141 (MIDDLEBROO
GoodOver: GUNNERS BRANCH
0.1 MILE WEST OF IS 270, Montgomery, MD
Built 1959 Load: 99.9 t ADT: 16,296
MD 202F & RAMP D
GoodOver: TRIB TO SW BRANCH
RAMP FROM ARENA DRIVE, Prince George's, MD
Built 1997 Load: 99.9 t ADT: 12,512
MD 5
GoodOver: BR OF PISCATAWAY CREEK
1.2 MILES SOUTH OF MD 223, Prince George's, MD
Built 1955 Load: 99.9 t ADT: 73,482
MD 637
GoodOver: OXON RUN
0.16 M E OF WASH DC LINE, Prince George's, MD
Built 1989 Load: 99.9 t ADT: 20,421
MD 953
GoodOver: LOTTSFORD BRANCH
0.54 MILE WEST OF MD 193, Prince George's, MD
Built 1984 Load: 99.9 t ADT: 3,740
US 1
GoodOver: BEAR BRANCH
0.7 MILE SOUTH OF MD 198, Prince George's, MD
Built 1985 Load: 99.9 t ADT: 35,712
MD 500
GoodOver: NORTHWEST BRANCH
0.12 MILE EAST OF MD 501, Prince George's, MD
Built 1987 Load: 99.9 t ADT: 41,631
MD 193
GoodOver: TRIB TO PAINT BRANCH
0.27 MILE WEST OF US 1, Prince George's, MD
Built 1955 Load: 99.9 t ADT: 41,260
MD 18A
GoodOver: COX CREEK
0.6 MILE EAST OF MD 835C, Queen Anne's, MD
Built 1999 Load: 99.9 t ADT: 1,312
MD 5
GoodOver: BRANCH OF MCINTOSH RUN
.652 MILE SOUTH OF MD 243, St. Mary's, MD
Built 2017 Load: 99.9 t ADT: 22,220
IS 70 EB
GoodOver: MEADOW BROOK CREEK
2.95 MILES WEST OF MD 63, Washington, MD
Built 1967 Load: 99.9 t ADT: 40,770
IS 70
GoodOver: BLACKROCK CREEK
0.66 MILE EAST OF MD 66, Washington, MD
Built 1968 Load: 99.9 t ADT: 58,600
US 113 NB
GoodOver: MATAPONI CREEK
2.44 MILES S OF US 113BU, Worcester, MD
Built 1972 Load: 99.9 t ADT: 6,962
ARUNDEL MILLS BOUL
GoodOver: PINEY RUN
0.4 MI SE OF MD 295, Anne Arundel, MD
Built 2001 Load: 99.9 t ADT: 25,990
STARWOOD DRIVE
GoodOver: MARLEY CREEK
0.6 MI S OF MD100, Anne Arundel, MD
Built 1971 Load: 99.9 t ADT: 652
CROSSROADS DRIVE
GoodOver: TRIB TO SEVERN RUN
625 FT EAST OF MD 170, Anne Arundel, MD
Built 1994 Load: 99.9 t ADT: 1,891
WAUGH CHAPEL ROAD
GoodOver: TOWSERS BRANCH
0.25 MI WEST OF MD 3, Anne Arundel, MD
Built 1972 Load: 99.9 t ADT: 18,893
Showing 5,051-5,100 of 5,484 bridges
Related
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.