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
ST. PAUL STREET
FairOver: I-83 AND AMTRAK
0.2 MI S OF NORTH AVE, Baltimore city, MD
Built 1960 Load: 41.7 t ADT: 28,095
OLD ELK NECK ROAD
FairOver: MILL CREEK
0.4 MI S OF MD 7, Cecil, MD
Built 2004 Load: 41.7 t ADT: 109
DEVILBISS BRIDGE R
FairOver: FISHING CREEK
0.75 MI W OF DUBLIN RD, Frederick, MD
Built 1979 Load: 41.7 t ADT: 3,371
SANG RUN ROAD
FairOver: SANG RUN
SANG RUN ROAD, Garrett, MD
Built 1997 Load: 41.7 t ADT: 454
ST CLAIR BRIDGE RD
FairOver: DEER CREEK
1.0 MILES S OF MD 165, Harford, MD
Built 1954 Load: 41.7 t ADT: 563
EDGEWOOD ROAD
FairOver: OTTER POINT CREEK (N)
0.3 MILES S OF MD 7, Harford, MD
Built 1933 Load: 41.7 t ADT: 9,886
MINK HOLLOW ROAD
FairOver: PATUXENT RIVER
HOWARD-MONTGOMERY CO LINE, Howard, MD
Built 1908 Load: 41.7 t ADT: 1,209
CHANDLEE MILL ROAD
FairOver: JAMES CREEK
0.4 MI S OF GOLD MINE RD, Montgomery, MD
Built 1972 Load: 41.7 t ADT: 302
GREENSPRING ROAD
FairOver: WYE RIVER
0.15 MI SE OF MD 301, Queen Anne's, MD
Built 1992 Load: 41.7 t ADT: 111
BROWNSVILLE ROAD
FairOver: ISRAEL CREEK
0.2 MI W OF MD RTE 67, Washington, MD
Built 1904 Load: 41.7 t ADT: 325
IS 95 RAMP F
FairOver: GWYNNS FALLS
SB FROM WASHINGTON BLVD, Baltimore city, MD
Built 1982 Load: 41.7 t ADT: 6,160
IS 95 SB
FairOver: RCE ST HNVR ST I95 RPJ
Milepost M55.1, Baltimore city, MD
Built 1979 Load: 41.7 t ADT: 73,769
I-95 RAMP OP
FairOver: KEITH AVENUE
Milepost M56.5, Baltimore city, MD
Built 1976 Load: 41.7 t ADT: 3,245
IS 95 VIADUCT SB
FairOver: CONRAIL YARD
Milepost M56.9, Baltimore city, MD
Built 1980 Load: 41.7 t ADT: 72,095
ERDMAN AVE EB
FairOver: I-895
Milepost M13.15, Baltimore city, MD
Built 1957 Load: 41.7 t ADT: 12,890
IS 68 RAMP E(4)
FairOver: CENTRE ST QUEEN CITY DR
0.52 MI E OF US 48H, Allegany, MD
Built 1968 Load: 42.2 t ADT: 6,507
MD 10 NBR
FairOver: FURNACE CREEK
0.38 MI N OF MD 270, Anne Arundel, MD
Built 1973 Load: 42.2 t ADT: 47,240
MD 10 SBR
FairOver: FURNACE CREEK
0.38 MI N OF MD 270, Anne Arundel, MD
Built 1973 Load: 42.2 t ADT: 47,240
MD 100 WBR
FairOver: DEEP RUN
ON HOWARD COUNTY LINE, Anne Arundel, MD
Built 1996 Load: 42.2 t ADT: 56,840
MD 45
FairOver: PINEY CREEK
0.06 MI N OF SPARKS RD, Baltimore, MD
Built 1975 Load: 42.2 t ADT: 23,992
IS 83 SBR
FairOver: QUAKER BOTTOM ROAD
0.9 M N OF BR NO 0305600, Baltimore, MD
Built 1959 Load: 42.2 t ADT: 33,380
IS 83 SBR
FairOver: THORNTON MILL ROAD
0.9 M S OF BR NO 0305500, Baltimore, MD
Built 1959 Load: 42.2 t ADT: 60,263
IS 95 SBR
FairOver: IS 95 RAMP I
1.07 MILE NORTH OF US 1, Baltimore, MD
Built 1969 Load: 42.2 t ADT: 182,461
MD 7
FairOver: BEAN BRANCH
2.03 MI S OF HARFORD CO, Baltimore, MD
Built 1975 Load: 42.2 t ADT: 11,470
MD 27
FairOver: MORGAN RUN
1.68 MILE NORTH OF MD 407, Carroll, MD
Built 1922 Load: 42.2 t ADT: 14,091
US 40 EB
FairOver: LITTLE ELK CREEK
0.19 MILE EAST OF MD 279, Cecil, MD
Built 1939 Load: 42.2 t ADT: 15,537
US 40 WB
FairOver: LITTLE ELK CREEK
0.19 MILE EAST OF MD 279, Cecil, MD
Built 1939 Load: 42.2 t ADT: 16,172
MD 279
FairOver: LITTLE ELK CREEK
0.19 MILE SOUTH OF MD 545, Cecil, MD
Built 1968 Load: 42.2 t ADT: 13,600
US 50 WB
FairOver: BIG MILL POND
3.21 MILES WEST OF MD 331, Dorchester, MD
Built 1996 Load: 42.2 t ADT: 23,981
IS 70 WBR
FairOver: MD 180
0.02 MILE EAST OF US 15, Frederick, MD
Built 1968 Load: 42.2 t ADT: 94,760
MT ZION ROAD
FairOver: US 15/US 340
1.55 MI N OF US 340, Frederick, MD
Built 1968 Load: 42.2 t ADT: 5,420
US 15 NBR
FairOver: MD 550
0.36 MILE NORTH OF MD 15D, Frederick, MD
Built 1972 Load: 42.2 t ADT: 27,210
MD 495
FairOver: CRABTREE CREEK
2.74 MILES N OF MD 135, Garrett, MD
Built 1934 Load: 42.2 t ADT: 1,711
MD 94
FairOver: PATUXENT RIVER
ON MONTGOMERY CO LINE, Howard, MD
Built 1990 Load: 42.2 t ADT: 3,022
W WATERSVILLE ROAD
FairOver: IS 70
0.16 MILE NORTH OF MD 144, Howard, MD
Built 1973 Load: 42.2 t ADT: 1,639
BROKEN LAND PKWY
FairOver: MD 32
0.47 MI N OF MD 732A, Howard, MD
Built 1981 Load: 42.2 t ADT: 32,730
MD 355
FairOver: CSX TRANS MU 681 MU 77
0.19 M S OF BROOKS AVENUE, Montgomery, MD
Built 1987 Load: 42.2 t ADT: 34,970
US 29
FairOver: MD 650
0.35 M S OF STEWART LANE, Montgomery, MD
Built 1957 Load: 42.2 t ADT: 61,922
MD 212A
FairOver: INDIAN CREEK
0.07 MILE NORTH OF MD 694, Prince George's, MD
Built 1937 Load: 42.2 t ADT: 19,631
US 50 WB/301 SB
FairOver: PINEY CREEK
1.21 MILES EAST OF MD 552, Queen Anne's, MD
Built 1950 Load: 42.2 t ADT: 65,701
IS 70 EB
FairOver: HOPEWELL RD
0.41 MILE WEST OF IS 81, Washington, MD
Built 1964 Load: 42.2 t ADT: 53,350
IS 70 WB
FairOver: HOPEWELL RD
0.41 MILE WEST OF IS 81, Washington, MD
Built 1964 Load: 42.2 t ADT: 53,350
IS 70 EB
FairOver: ST PAUL RD
1.84 MILES EAST OF MD 68, Washington, MD
Built 1965 Load: 42.2 t ADT: 40,770
IS 70 WB
FairOver: ST PAUL RD
1.84 MILES EAST OF MD 68, Washington, MD
Built 1965 Load: 42.2 t ADT: 40,770
VALLEY STREET
FairOver: WILLS CREEK / WMSRR
0.20 MI S OF US 40 ALT, Allegany, MD
Built 1955 Load: 42.2 t ADT: 6,149
MARLEY NECK BOULEV
FairOver: MARLEY CREEK
1 MI SW of MD 173, Anne Arundel, MD
Built 1982 Load: 42.2 t ADT: 13,455
LOMBARD STREET
FairOver: NORFOLK SOUTHERN RAILROA
LOMBARD ST OV NS RR, Baltimore city, MD
Built 1900 Load: 42.2 t ADT: 8,900
DR. MILLER ROAD
FairOver: WEST BRANCH
0.86 MI N OF MD 272, Cecil, MD
Built 1992 Load: 42.2 t ADT: 1,470
BUMPY OAK ROAD
FairOver: MATTAWOMAN CREEK
0.8 MI N ASHLAND RD, Charles, MD
Built 1978 Load: 42.2 t ADT: 4,509
ANTHONY MILL ROAD
FairOver: WATTS CREEK
2.0 MILES SOUTH OF MD 317, Caroline, MD
Built 2004 Load: 42.2 t ADT: 678
Showing 1,651-1,700 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.