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
US 40 WB
FairOver: BIG ELK CREEK
0.34 MILE WEST OF MD 213, Cecil, MD
Built 1939 Load: 32.7 t ADT: 16,172
MD 273
FairOver: NORTHEAST CREEK
1.18 MILES WEST OF MD 272, Cecil, MD
Built 1931 Load: 32.7 t ADT: 5,542
MD 7C
FairOver: BR OF NORTHEAST CREEK
0.63 MILE NORTH OF MD 267, Cecil, MD
Built 1900 Load: 32.7 t ADT: 2,360
MD 6
FairOver: PORT TABACCO CREEK
2.55 MILES WEST OF US 301, Charles, MD
Built 1988 Load: 32.7 t ADT: 3,302
MD 6
FairOver: MILL RUN
0.03 M W OF MILL SWAMP RD, Charles, MD
Built 1961 Load: 32.7 t ADT: 3,302
MD 227
FairOver: MILL SWAMP
2.29 MILES WEST OF MD 210, Charles, MD
Built 1956 Load: 32.7 t ADT: 5,611
MD 227
FairOver: PAGES SWAMP
1.15 MILES WEST OF US 301, Charles, MD
Built 1900 Load: 32.7 t ADT: 5,771
MD 228
FairOver: PINEY BRANCH
1.18 M E OF PG CO LINE, Charles, MD
Built 1957 Load: 32.7 t ADT: 39,800
MD 331
FairOver: GRAVEL RUN
1.24 MILE SOUTS OF MD 318, Dorchester, MD
Built 1958 Load: 32.7 t ADT: 4,530
US 50
FairOver: MIDDLETOWN BRANCH
0.04 MILE EAST OF MILL RD, Dorchester, MD
Built 1944 Load: 32.7 t ADT: 19,469
US 15
FairOver: LITTLE HUNTING CREEK
.87 MILE NORTH OF MD 806A, Frederick, MD
Built 1962 Load: 32.7 t ADT: 30,800
US 40
FairOver: MIDDLE CREEK
0.12 MILE EAST OF MD 17, Frederick, MD
Built 1936 Load: 32.7 t ADT: 5,522
US 15 SBR
FairOver: FISHING CREEK
0.07 MI N OF POWELL RD, Frederick, MD
Built 1961 Load: 32.7 t ADT: 43,080
US 15 SB
FairOver: TOMS CREEK
0.65 MILE N OF US 15BU, Frederick, MD
Built 1965 Load: 32.7 t ADT: 18,340
US 40 MEDIAN CROSS
FairOver: ROCK CREEK
0.28 M W OF BOWERS ROAD, Frederick, MD
Built 1969 Load: 32.7 t ADT: 25
US 15/340
FairOver: BALLENGER CREEK
1.95 MILES SOUTH OF IS 70, Frederick, MD
Built 1968 Load: 32.7 t ADT: 53,991
MD 75
FairOver: BENS BRANCH
0.19 MI S OF MD 874C, Frederick, MD
Built 1964 Load: 32.7 t ADT: 10,783
MD 26
FairOver: LINGANORE CREEK
0.22 M W OF BR NO 1016800, Frederick, MD
Built 1950 Load: 32.7 t ADT: 5,482
MD 26
FairOver: BRANCH OF LINGANORE CREE
0.58 M W ALBAUGH ROAD, Frederick, MD
Built 1950 Load: 32.7 t ADT: 5,272
MD 550
FairOver: FRIENDS CREEK
0.15 M S OF BENTZEL ROAD, Frederick, MD
Built 1981 Load: 32.7 t ADT: 7,861
US 1 BU
FairOver: WINTERS RUN
0.87 MILE NORTH OF US 1, Harford, MD
Built 1930 Load: 32.7 t ADT: 20,564
US 1 & RAMP C(2)
FairOver: BYNUM RUN
0.25 MILE NORTH OF MD 24, Harford, MD
Built 1964 Load: 32.7 t ADT: 23,320
MD 165
FairOver: BROAD CREEK
0.4 MILE NORTH OF MD 543, Harford, MD
Built 1959 Load: 32.7 t ADT: 5,772
MD 462
FairOver: SWAN CREEK
0.84 MILE NORTH OF MD 22, Harford, MD
Built 1978 Load: 32.7 t ADT: 7,401
MD 543
FairOver: DEER CREEK
1.47 MILES S OF MD 440, Harford, MD
Built 1932 Load: 32.7 t ADT: 7,736
US 1 & RAMP C(8)
FairOver: GUILFORD BRANCH
0.26 M S OF GUILFORD ROAD, Howard, MD
Built 1983 Load: 32.7 t ADT: 38,190
MD 851
FairOver: SOUTH BR PATAPSCO RIVER
ON CARROLL CO LINE, Howard, MD
Built 1975 Load: 32.7 t ADT: 1,301
MD 175
FairOver: PEDESTRIAN WALKWAY
1.56 MILES N OF MD 175HC, Howard, MD
Built 1975 Load: 32.7 t ADT: 44,142
MD 32 RAMP A(2)
FairOver: GUILFORD BRANCH
0.05 MILE EAST OF US 1, Howard, MD
Built 1983 Load: 32.7 t ADT: 3,123
MD 32 CDS CO RD
FairOver: GUILFORD BRANCH
0.418 MILE SOUTH OF US 1, Howard, MD
Built 1983 Load: 32.7 t ADT: 66,020
MD 20
FairOver: SHIPYARD CREEK
1.20 MILES WEST OF MD 21, Kent, MD
Built 1920 Load: 32.7 t ADT: 4,590
MD 289
FairOver: RADCLIFF CREEK
0.82 MILE SOUTH OF MD 213, Kent, MD
Built 1948 Load: 32.7 t ADT: 3,563
MD 299
FairOver: HERRING BRANCH
0.46 M S OF CECIL CO LINE, Kent, MD
Built 1913 Load: 32.7 t ADT: 753
MD 289
FairOver: SPILLWAY OF CHESTER RIVE
0.12 M S OF COLLINS AVE, Kent, MD
Built 1948 Load: 32.7 t ADT: 4,023
MD 28 & RAMP 6
FairOver: WATTS BRANCH
0.18 MILE WEST OF IS 270, Montgomery, MD
Built 1955 Load: 32.7 t ADT: 47,601
US 29
FairOver: NORTHWEST BRANCH
0.27 M S OF LOCKWOOD DR, Montgomery, MD
Built 1920 Load: 32.7 t ADT: 67,927
MD 107
FairOver: DRY SENECA CREEK
1.4 MILES WEST OF MD 28, Montgomery, MD
Built 1992 Load: 32.7 t ADT: 5,862
MD 115
FairOver: ROCK CREEK
0.34 M E OF OLDE MILL RUN, Montgomery, MD
Built 1970 Load: 32.7 t ADT: 16,981
MD 124
FairOver: GREAT SENECA CREEK
0.23 MI S OF WATKINS RD, Montgomery, MD
Built 1989 Load: 32.7 t ADT: 11,881
MD 182
FairOver: BEL PRE CREEK
1.15 MILE NORTH OF MD 97, Montgomery, MD
Built 1991 Load: 32.7 t ADT: 21,002
MD 190
FairOver: BOOZE CREEK
0.56 MILE EAST OF IS 495, Montgomery, MD
Built 1962 Load: 32.7 t ADT: 44,290
MD 193
FairOver: SLIGO CREEK
1.26 MILES EAST OF MD 97, Montgomery, MD
Built 1932 Load: 32.7 t ADT: 28,580
MD 185
FairOver: BR OF ROCK CREEK
0.14 MILE SOUTH OF MD 586, Montgomery, MD
Built 1963 Load: 32.7 t ADT: 38,552
MD 124
FairOver: GOSHEN BRANCH
0.6 MI N OF BRINK RD, Montgomery, MD
Built 1989 Load: 32.7 t ADT: 11,560
MD 586
FairOver: TURKEY BRANCH
0.98 MILE WEST OF MD 185, Montgomery, MD
Built 1955 Load: 32.7 t ADT: 47,792
IS 495X
FairOver: BOOZE CREEK
0.48 MILE SOUTH OF IS 495, Montgomery, MD
Built 1964 Load: 32.7 t ADT: 19,820
MD 185
FairOver: TURKEY BRANCH
0.99 MILE SOUTH OF MD 97, Montgomery, MD
Built 1969 Load: 32.7 t ADT: 36,532
CLARA BARTON PKWY
FairOver: ROCK RUN
W OF INTERCHANGE, Montgomery, MD
Built 1963 Load: 32.7 t ADT: 13,090
MD 927 & RAMP D
FairOver: IS 270 RAMP I
0.13 M E OF BR NO 1506800, Montgomery, MD
Built 1988 Load: 32.7 t ADT: 57,252
MD 201
FairOver: BR OF NORTHEAST BR
0.03 M N OF RIVERDALE RD, Prince George's, MD
Built 1955 Load: 32.7 t ADT: 33,270
Showing 651-700 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.