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
IS 68
FairOver: ELK LICK RUN
0.82 M E OF BR NO 0115400, Allegany, MD
Built 1990 Load: 99.9 t ADT: 18,670
IS 68
FairOver: ELK LICK RUN
0.184 MI W BR NO. 0115200, Allegany, MD
Built 1990 Load: 99.9 t ADT: 18,670
IS 68 & RMPS 2 5 7
FairOver: ELK LICK RUN
0.11 MI E OF MD 144, Allegany, MD
Built 1990 Load: 99.9 t ADT: 1,189
IS 68 RMPS 7 4 & 6
FairOver: ELK LICK RUN
0.03 MILE SOUTH OF MD 144, Allegany, MD
Built 1990 Load: 99.9 t ADT: 1,189
IS 68 RAMP C(7)
FairOver: TRIB TO FLINTSTONE CREEK
0.65 M E OF BR NO 0116000, Allegany, MD
Built 1990 Load: 99.9 t ADT: 999
IS 68
FairOver: WEST TRIB FLINTSTONE CRK
1.55 M E OF BR NO 0114500, Allegany, MD
Built 1990 Load: 99.9 t ADT: 19,030
MD 144
FairOver: WEST TRIB FLINTSTONE CRE
0.65 M W OF BR NO 0116300, Allegany, MD
Built 1990 Load: 99.9 t ADT: 1,121
MD 144
FairOver: WEST TRIB FLINTSTONE CRE
2.37 M E OF IS 68, Allegany, MD
Built 1990 Load: 99.9 t ADT: 1,121
US 220
FairOver: TRIB TO NORTH BR POTOMAC
0.49 MI N OF MD 135A, Allegany, MD
Built 1951 Load: 99.9 t ADT: 7,111
MD 295
FairOver: PINEY RUN
0.43 M S OF BR NO 0202000, Anne Arundel, MD
Built 1950 Load: 99.9 t ADT: 88,882
MD 270 & RAMP 2
FairOver: BRANCH OF FURNACE CREEK
0.08 MI S OF MD 10, Anne Arundel, MD
Built 1975 Load: 99.9 t ADT: 8,562
MD 162
FairOver: CABIN BRANCH CREEK
0.31 MILE SOUTH OF MD 170, Anne Arundel, MD
Built 1970 Load: 99.9 t ADT: 19,020
IS 695
FairOver: TRIB TO PATAPSCO RIVER
636 FT E OF NURSERY ROAD, Anne Arundel, MD
Built 1951 Load: 99.9 t ADT: 128,182
IS 97
FairOver: BR OF BACON RIDGE BRANCH
0.36 MILE N OF FARM ROAD, Anne Arundel, MD
Built 1987 Load: 99.9 t ADT: 91,300
IS 97
FairOver: BR OF BACON RIDGE BRANCH
0.3 MILE N OF FARM ROAD, Anne Arundel, MD
Built 1987 Load: 99.9 t ADT: 91,300
MD 10
FairOver: BRANCH OF LAKE WATERFORD
0.29 MILE NORTH OF MD 2, Anne Arundel, MD
Built 1991 Load: 99.9 t ADT: 27,110
MD 648H
FairOver: BRANCH OF CATTAIL CREEK
0.01 MI N OF MD 2, Anne Arundel, MD
Built 1989 Load: 99.9 t ADT: 14,962
MD 32
FairOver: PICTURE FRAME BRANCH
0.37 MILE SOUTH OF MD 170, Anne Arundel, MD
Built 1992 Load: 99.9 t ADT: 42,672
MD 32 EBR
FairOver: AMTRAK
0.41 MILE WEST OF MD 170, Anne Arundel, MD
Built 1991 Load: 99.9 t ADT: 53,532
MD 32 EBR
FairOver: TOWN CENTER BOLEVARD
0.79 MILE EAST OF MD 175, Anne Arundel, MD
Built 1992 Load: 99.9 t ADT: 43,672
MD 32 WBR
FairOver: TOWN CENTER BOLEVARD
0.79 MILE EAST OF MD 175, Anne Arundel, MD
Built 1992 Load: 99.9 t ADT: 43,672
MD 762
FairOver: CABIN BRANCH
0.19 MILE SOUTH OF MD 170, Anne Arundel, MD
Built 1970 Load: 99.9 t ADT: 8,631
STEWART AVENUE
FairOver: SAWMILL CREEK
0.5 MI E OF MD 176, Anne Arundel, MD
Built 1990 Load: 99.9 t ADT: 6,220
MD 25
FairOver: INDIAN RUN
0.55 MI S OF MD 88, Baltimore, MD
Built 1979 Load: 99.9 t ADT: 8,321
MD 25
FairOver: BEAVERDAM RUN
2.5 MI N OF MD 131, Baltimore, MD
Built 1993 Load: 99.9 t ADT: 5,031
IS 70 RAMPS 3 &
FairOver: DEAD RUN
@ I-695 & I-70 INTERCHANG, Baltimore, MD
Built 1961 Load: 99.9 t ADT: 188,860
IS 695 & COUNTY RO
FairOver: SCOTTS LEVEL BRANCH
0.063 M N MILFORD MILL RD, Baltimore, MD
Built 1961 Load: 99.9 t ADT: 189,237
IS 695
FairOver: SLAUGHTERHOUSE BRANCH
0.72 MILE SOUTH OF MD 25, Baltimore, MD
Built 1961 Load: 99.9 t ADT: 176,700
I 695 & RAMPS 5
FairOver: BRANCH OF ROLAND RUN
0.33 MILE WEST OF MD 139, Baltimore, MD
Built 1955 Load: 99.9 t ADT: 179,082
I 70 RAMPS 4 &
FairOver: DEAD RUN
@ I-695 & I-70 INTERCHANG, Baltimore, MD
Built 1961 Load: 99.9 t ADT: 35,422
IS 70 RAMPS 3 &
FairOver: DEAD RUN
IS 70 WB TO IS 695 IL, Baltimore, MD
Built 1961 Load: 99.9 t ADT: 39,171
IS 83
FairOver: OWL BRANCH
1.11 MILE SOUTH OF MD 45, Baltimore, MD
Built 1958 Load: 99.9 t ADT: 50,431
IS 95
FairOver: EAST BRANCH HERBERT RUN
0.05 MILE SOUTH OF US 1, Baltimore, MD
Built 1969 Load: 99.9 t ADT: 176,796
US 1
FairOver: WHITEMARSH RUN
0.24 MI N OF MD 43, Baltimore, MD
Built 1971 Load: 99.9 t ADT: 35,092
MD 146
FairOver: LONG QUARTER BRANCH
0.89 MILE NORTH OF IS 695, Baltimore, MD
Built 1979 Load: 99.9 t ADT: 15,952
MD 43
FairOver: BRANCH OF WHITEMARSH RUN
0.46 MILE WEST OF IS 95, Baltimore, MD
Built 1979 Load: 99.9 t ADT: 53,732
IS 695 RAMP 1
FairOver: BRANCH OF GWYNNS FALLS
.287 M N OF OLD COURT RD, Baltimore, MD
Built 1982 Load: 99.9 t ADT: 34,582
IS 795
FairOver: BRANCH OF GWYNNS FALLS
1.04 MI N OF MCDONOUGH RD, Baltimore, MD
Built 1984 Load: 99.9 t ADT: 110,982
IS 695 & RAMPS 4
FairOver: HERBERT RUN
0.021 MI S WILKENS AVENUE, Baltimore, MD
Built 1956 Load: 99.9 t ADT: 192,180
MD 2 & 4
FairOver: JOHNS CREEK
0.19 M S OF NURSERY ROAD, Calvert, MD
Built 1987 Load: 99.9 t ADT: 26,941
MD 480
FairOver: FORGE BRANCH
1.88 MILE WEST OF MD 314, Caroline, MD
Built 1932 Load: 99.9 t ADT: 4,261
MD 306
FairOver: HOUSTON BRANCH
0.1 M W OF TURNER ROAD, Caroline, MD
Built 1955 Load: 99.9 t ADT: 282
MD 404
FairOver: SMITHVILLE DITCH
0.295 M W OF BULLOCK ROAD, Caroline, MD
Built 1957 Load: 99.9 t ADT: 8,721
MD 852G
FairOver: CRANBERRY BRANCH
.12 MILE NORTH OF MD 852H, Carroll, MD
Built 1985 Load: 99.9 t ADT: 1,150
MD 97
FairOver: SILVER RUN
2.31 MI S OF PA LINE, Carroll, MD
Built 1987 Load: 99.9 t ADT: 10,250
MD 27
FairOver: WEST BRANCH PATAPSCO RIV
.04 MILE SOUTH OF MD 852G, Carroll, MD
Built 1959 Load: 99.9 t ADT: 18,790
MD 75
FairOver: ABANDON MILL RUN
0.05 MI N OF FREDERICK CO, Carroll, MD
Built 1982 Load: 99.9 t ADT: 2,172
MD 27
FairOver: LITTLE PIPE CREEK
0.4 MILE NORTH OF MD 808B, Carroll, MD
Built 1991 Load: 99.9 t ADT: 10,690
MD 7C
FairOver: MILL CREEK
1.84 MILES SOUTH OF US 40, Cecil, MD
Built 1987 Load: 99.9 t ADT: 4,860
MD 222
FairOver: HAPPY VALLEY BRANCH
1.52 MILE NORTH OF MD 275, Cecil, MD
Built 1932 Load: 99.9 t ADT: 2,701
Showing 3,151-3,200 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.