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
MD 36
FairOver: IS 68
0.91 MILE NORTH OF MD 55, Allegany, MD
Built 1972 Load: 36.7 t ADT: 6,853
MD 140
FairOver: GWYNNS FALLS
0.20 MI N OF MD 940, Baltimore, MD
Built 1973 Load: 36.7 t ADT: 33,480
MD 41
FairOver: TRIB TO HERRING RUN
0.4 M N OF TAYLOR AVENUE, Baltimore, MD
Built 1963 Load: 36.7 t ADT: 31,890
FOREST & PARKS ROA
FairOver: IS 70
1.4 MI W OF IS 70, Baltimore, MD
Built 1965 Load: 36.7 t ADT: 3
MD 702 EBR
FairOver: MD 150
1.20 MI E OF MD 695, Baltimore, MD
Built 1970 Load: 36.7 t ADT: 25,819
IS 95
FairOver: WEST BRANCH HERBERT RUN
0.22 MILE SOUTH OF US 1, Baltimore, MD
Built 1969 Load: 36.7 t ADT: 176,834
MD 97
FairOver: SOUTH BRANCH PATAPSCO RI
ON HOWARD CO LINE, Carroll, MD
Built 1973 Load: 36.7 t ADT: 8,770
MD 75
FairOver: LINGANORE CREEK
0.73 MI N OF MD 75FC, Frederick, MD
Built 1968 Load: 36.7 t ADT: 4,752
US 29 SB
FairOver: MIDDLE PATUXENT RIVER
1.05 MILES SOUTH OF MD 32, Howard, MD
Built 1970 Load: 36.7 t ADT: 52,913
MD 97
FairOver: CATTAIL CREEK
1.31 MILES N OF MONT CO, Howard, MD
Built 1927 Load: 36.7 t ADT: 13,200
VOLLMERHAUSEN ROAD
FairOver: MD 32
0.9 MI W OF US 1, Howard, MD
Built 1970 Load: 36.7 t ADT: 2,667
US 50 WB
FairOver: SOUTH BRANCH SKIPTON CRE
0.66 MILE WEST OF MD 662B, Talbot, MD
Built 1948 Load: 36.7 t ADT: 31,938
US 40
FairOver: LITTLE BEAVER CREEK
1.54 MILES EAST OF MD 66, Washington, MD
Built 1936 Load: 36.7 t ADT: 5,972
HARTLEY MILL ROAD
FairOver: LONG GREEN CREEK
0.2 MI NW OF HARFORD RD, Baltimore, MD
Built 1975 Load: 36.7 t ADT: 306
DEANWOOD ROAD
FairOver: TRIBUTARY TO HERRING RUN
0.2 MI E OF MD RTE 542, Baltimore, MD
Built 1966 Load: 36.7 t ADT: 4,715
OLD TELEGRAPH ROAD
FairOver: BACK CREEK
0.6 MI S OF MD 286, Cecil, MD
Built 1930 Load: 36.7 t ADT: 525
CRELLIN MINE ROAD
FairOver: SNOWY CREEK
0.2 MI WEST OF CRELLIN ST, Garrett, MD
Built 1960 Load: 36.7 t ADT: 35
HUMBERSON ROAD
FairOver: BUFFALO RUN
.5 MI NW OLD GOOD HOPE RD, Garrett, MD
Built 1935 Load: 36.7 t ADT: 133
LAKE POTOMAC DRIVE
FairOver: WATTS BRANCH
0.1 MI N OF JCT SR 190, Montgomery, MD
Built 1985 Load: 36.7 t ADT: 139
HANGING ROCK ROAD
FairOver: LANES RUN
0.15 MI N OF LANES RUN RD, Washington, MD
Built 1984 Load: 36.7 t ADT: 340
I-895 B NB
FairOver: MD 170
I-895NB Milepost B1.9, Anne Arundel, MD
Built 1957 Load: 36.7 t ADT: 14,912
I-895 B SB
FairOver: MD 170
I-895SB Milepost B1.9, Anne Arundel, MD
Built 1957 Load: 36.7 t ADT: 17,263
IS 95 NB
FairOver: DUNDALK AVE KANE ST
0.4 MI S OF EASTERN AVE, Baltimore city, MD
Built 1976 Load: 36.7 t ADT: 69,003
BELVIDERE ROAD
FairOver: I-95
Milepost M96.0, Cecil, MD
Built 1963 Load: 36.7 t ADT: 1,435
US 113
FairOver: PURNELL BRANCH
0.73 MILE NORTH OF MD 365, Worcester, MD
Built 1975 Load: 36.9 t ADT: 10,491
TWIN ARCH ROAD
FairOver: SOUTH BR PATAPSCO RIVER
ON HOWARD COUNTY LINE, Carroll, MD
Built 1900 Load: 36.9 t ADT: 98
MD 648E
FairOver: MARLEY CREEK
0.11 MI S OF MD 270, Anne Arundel, MD
Built 1976 Load: 37.2 t ADT: 19,703
MD 695 IL
FairOver: KELSO DRIVE
0.02 MILE SOUTH OF MD 702, Baltimore, MD
Built 1969 Load: 37.2 t ADT: 96,082
MD 313
FairOver: SPRING BRANCH
2.33 MILE SOUTH OF MD 314, Caroline, MD
Built 1955 Load: 37.2 t ADT: 7,160
MD 273
FairOver: LITTLE ELK CREEK
1.03 MILE WEST OF MD 213, Cecil, MD
Built 1973 Load: 37.2 t ADT: 8,002
MD 234
FairOver: MIRANT POWER COMPANY
0.19 MILE EAST OF US 301, Charles, MD
Built 1967 Load: 37.2 t ADT: 6,741
MD 257
FairOver: CSX TRANS
0.08 MILE EAST OF US 301, Charles, MD
Built 1967 Load: 37.2 t ADT: 6,290
IS 70 EBR
FairOver: US 40AL
0.28 M E OF BR NO 1014500, Frederick, MD
Built 1967 Load: 37.2 t ADT: 74,920
BARTHOLOWS ROAD
FairOver: IS 70 CSX TRANSPORTATIO
2.26 MI E OF MD 75, Frederick, MD
Built 1974 Load: 37.2 t ADT: 3,994
IS 95 SB
FairOver: LITTLE PATUXENT RIVER
0.46 MILE SOUTH OF MD 32, Howard, MD
Built 1971 Load: 37.2 t ADT: 104,355
SAND HILL ROAD
FairOver: IS 70
1.19 MI E OF MD 32, Howard, MD
Built 1973 Load: 37.2 t ADT: 999
MD 201 NB
FairOver: IS 95
0.53 MILE NORTH OF MD 193, Prince George's, MD
Built 1963 Load: 37.2 t ADT: 16,375
MD 201 SB
FairOver: IS 95
0.53 MILE NORTH OF MD 193, Prince George's, MD
Built 1963 Load: 37.2 t ADT: 16,375
IS 95 IL
FairOver: RITCHIE MARLBORO ROAD
1.64 MILES S OF MD 214, Prince George's, MD
Built 1964 Load: 37.2 t ADT: 201,196
MD 410
FairOver: CSX TRANS. MU STS
0.24 MILE EAST OF US 1, Prince George's, MD
Built 1967 Load: 37.2 t ADT: 37,792
MD 363
FairOver: DAMES QUARTER CREEK
0.01 M E OF MESSICK ROAD, Somerset, MD
Built 1976 Load: 37.2 t ADT: 2,308
IS 70 WB
FairOver: RAMP D2 TO MD 615
0.85 MILE E OF MD 144WB, Washington, MD
Built 1960 Load: 37.2 t ADT: 38,542
US 50 EB
FairOver: POCOMOKE RIVER
ON WORCESTER CO LINE, Wicomico, MD
Built 1964 Load: 37.2 t ADT: 24,122
US 50 WB
FairOver: POCOMOKE RIVER
ON WORCESTER CO LINE, Wicomico, MD
Built 1964 Load: 37.2 t ADT: 24,122
LOCUST GROVE ROAD
FairOver: WILLS CREEK
AT US 40 ALT, Allegany, MD
Built 1900 Load: 37.2 t ADT: 142
NORTHERN PARKWAY
FairOver: I-83 JONES FALLS & MTA
1.5 MI N COLD SPRING LANE, Baltimore city, MD
Built 1962 Load: 37.2 t ADT: 53,370
BILLINGSLEY ROAD
FairOver: MATTAWOMAN CREEK
1.5 MI E OF MD RTE 224, Charles, MD
Built 1984 Load: 37.2 t ADT: 7,843
SPRINGDALE RD
FairOver: LITTLE PIPE CREEK
1.09 MILES N OF MD 31, Carroll, MD
Built 1900 Load: 37.2 t ADT: 457
SOUTH MARKET STREE
FairOver: CARROLL CREEK
510 SOUTH OF MD 144, Frederick, MD
Built 1988 Load: 37.2 t ADT: 8,900
4TH STREET
FairOver: TRIB TO PATUXENT RIVER
0.1 MI SOUTH OF MD 198 EB, Prince George's, MD
Built 1950 Load: 37.2 t ADT: 1,240
Showing 1,201-1,250 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.