Total Bridges
5,527
Public highway bridges in Maryland
State profile · Below national median SD
Maryland bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Maryland — drawn straight from the FHWA National Bridge Inventory.
- 5,527
- Public bridges
- 25.9%
- Good condition
- 4.3%
- Poor condition
- 4.3%
- Structurally deficient
Good Condition
25.9%
1,432 bridges rated 7-9
-24.1pp vs 50% benchmark
Poor Condition
4.3%
236 bridges rated 0-4
Structurally Deficient
4.3%
236 bridges flagged for repair priority
-2.7pp vs national avg 7.0%
Maryland vs national bridge condition
Maryland — Good condition share 25.9%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Maryland — Structurally deficient share 14.2%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Maryland (FHWA NBI)
Counties (24)
Allegany 245 Anne Arundel 395 Baltimore 787 Baltimore city 380 Calvert 33 Caroline 70 Carroll 205 Cecil 194 Charles 94 Dorchester 47 Frederick 491 Garrett 139 Harford 275 Howard 310 Kent 44 Montgomery 522 Prince George's 582 Queen Anne's 88 Somerset 46 St. Mary's 50 Talbot 42 Washington 301 Wicomico 100 Worcester 82
Maryland vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Maryland on the same metric.
09
Connecticut
3.95% top marginal rate
47
Tennessee
3.97% top marginal rate
24
Maryland
4.27% top marginal rate
08
Colorado
4.32% top marginal rate
41
Oregon
4.46% top marginal rate
Bridges Needing Most Attention in Maryland
Six lowest-condition bridges in Maryland, ranked by composite NBI rating. Each is inspected at least every 24 months.
OLD SELBYSPORT RD
PoorOver: BEAR CREEK
0.01 MI N OF WALNUT ST, Garrett, MD
Built 1920 Load: 2.7 t ADT: 30
ZION ROAD
PoorOver: HAWLINGS RIVER
2.8 MILES NORTH OF MD 108, Montgomery, MD
Built 1930 Load: 4.5 t ADT: 2,440
ROXBURY ROAD
PoorOver: BEAVER CREEK
0.1 MI W OF ALT US RTE 40, Washington, MD
Built 1920 Load: 7.3 t ADT: 533
TUFTON AVENUE
PoorOver: WATERSPOUT RUN
2.63 MI. WEST MD 25, Baltimore, MD
Built 1920 Load: 7.7 t ADT: 7,735
MOHRS LANE
Structurally DeficientOver: CSX RAILROAD
0.1 MI NW OF US RTE 40, Baltimore, MD
Built 1912 Load: 9.1 t ADT: 1,600
OLD MONTGOMERY RD
Structurally DeficientOver: LITTLE PATUXENT RIVER
0.5 MI W OF US RTE 29, Howard, MD
Built 1935 Load: 10.0 t ADT: 10
All Bridges in Maryland
MD 543
FairOver: JAMES RUN
1.23 MILE SOUTH OF MD 136, Harford, MD
Built 1988 Load: 99.9 t ADT: 18,082
MD 24F
FairOver: HEAVENLY WATERS
0.18 MILE SOUTH OF MD 24, Harford, MD
Built 1987 Load: 99.9 t ADT: 23,140
MD 24
FairOver: PLUMTREE RUN
0.38 MILE SOUTH OF US 1BU, Harford, MD
Built 1987 Load: 99.9 t ADT: 35,300
MD 24
FairOver: PLUMTREE RUN
0.86 M N OF PLUMTREE ROAD, Harford, MD
Built 1987 Load: 99.9 t ADT: 37,310
MD 24
FairOver: PLUMTREE RUN
0.57 M N OF PLUMTREE ROAD, Harford, MD
Built 1987 Load: 99.9 t ADT: 37,310
COOL SPRING ROAD
FairOver: TOBACCO RUN
0.8 MILES W OF MD 136, Harford, MD
Built 1981 Load: 99.9 t ADT: 1,545
PLUMTREE ROAD
FairOver: PLUMTREE RUN
0.9 MILES W OF MD 24, Harford, MD
Built 1900 Load: 99.9 t ADT: 151
THOMAS RUN ROAD
FairOver: TRIB / THOMAS RUN
2.1 MILES NE OF MD 543, Harford, MD
Built 1973 Load: 99.9 t ADT: 1,690
BURNT HILL TRAIL
FairOver: TRIB GRAYS RUN
0.5 MILES N. OF MD 7, Harford, MD
Built 2008 Load: 99.9 t ADT: 515
HENDERSON ROAD
FairOver: TRIB / BYNUM RUN
0.1 MILES W OF MD 543, Harford, MD
Built 1990 Load: 99.9 t ADT: 1,759
BYNUM RIDGE ROAD
FairOver: BYNUM RUN
0.2 MILES E OF BYNUM RD, Harford, MD
Built 1975 Load: 99.9 t ADT: 827
OLD JOPPA ROAD
FairOver: TRIB / GUNPOWDER FALLS
100 FT S OF GREENSPRING A, Harford, MD
Built 1960 Load: 99.9 t ADT: 232
ECON DRIVE
FairOver: TRIB / BYNUM RUN
100 FT N MOORES MILL RD, Harford, MD
Built 1982 Load: 99.9 t ADT: 1,623
TODD ROAD
FairOver: TRIB / BYNUM RUN
0.4 MILES NE OF BRIERHILL, Harford, MD
Built 2003 Load: 99.9 t ADT: 165
US 1
FairOver: DEEP RUN
0.56 MILE NORTH OF MD 175, Howard, MD
Built 1929 Load: 99.9 t ADT: 29,180
US 1 SB
FairOver: LITTLE PATUXENT RIVER
0.38 MILE SOUTH OF MD 32, Howard, MD
Built 1900 Load: 99.9 t ADT: 20,330
MD 32
FairOver: BR OF PATAPSCO RIVER
0.49 MILE S OF MD 851F, Howard, MD
Built 1958 Load: 99.9 t ADT: 23,612
US 1 NBR
FairOver: RACE TRACK RD
0.06 MI N OF PG CO LINE, Howard, MD
Built 1949 Load: 99.9 t ADT: 16,190
IS 95 & RAMPS 2 &
FairOver: HAMMOND BRANCH
0.38 MILE NORTH OD MD 216, Howard, MD
Built 1968 Load: 99.9 t ADT: 192,401
IS 70 RAMP 6
FairOver: TERRAPIN BRANCH
0.06 MILE WEST OF MD 32, Howard, MD
Built 1972 Load: 99.9 t ADT: 5,972
MD 99
FairOver: DAVIS BRANCH
0.4 M E OF TAYLOR FARM RD, Howard, MD
Built 1986 Load: 99.9 t ADT: 5,971
MD 108
FairOver: CRICKET CREEK
0.85 MILE WEST OF MD 32, Howard, MD
Built 1912 Load: 99.9 t ADT: 12,830
MD 32
FairOver: BR OF TERRAPIN BRANCH
0.10 MILE SOUTH OF IS 70, Howard, MD
Built 1958 Load: 99.9 t ADT: 22,492
MD 100
FairOver: BR OF DEEP RUN
0.83 MILE EAST OF MD 104, Howard, MD
Built 1998 Load: 99.9 t ADT: 89,660
US 29 RAMPS I(7) &
FairOver: BEAVER RUN
0.67 MIle North OF MD 32, Howard, MD
Built 1992 Load: 99.9 t ADT: 3,132
MD 32
FairOver: CRICKET CREEK
0.88 MILE SOUTH OF MD 108, Howard, MD
Built 1994 Load: 99.9 t ADT: 45,660
MD 175
FairOver: BR OF LITTLE PATUXENT RI
2.1 MILE NORTH OF MD 108, Howard, MD
Built 1977 Load: 99.9 t ADT: 44,142
OAKLAND MILLS ROAD
FairOver: ELKHORN BRANCH OF LITTLE
1.0 M N Snowden River Pkw, Howard, MD
Built 1975 Load: 99.9 t ADT: 13,335
FREDERICK ROAD
FairOver: PLUMTREE BRANCH
1.0 MI W. OF MD RTE 29, Howard, MD
Built 1981 Load: 99.9 t ADT: 10,927
TAMAR DRIVE
FairOver: DORSEY RUN
0.1 MI W OF OLD MONGOMER, Howard, MD
Built 1989 Load: 99.9 t ADT: 11,824
SUMMER CLOUD WAY
FairOver: DORSEY RUN
0.3 MI W OF MD RTE 108, Howard, MD
Built 1990 Load: 99.9 t ADT: 605
NORTH CHATHAM LANE
FairOver: UNNAMED STREAM
AT PAULSKIRK DRIVE, Howard, MD
Built 1992 Load: 99.9 t ADT: 2,840
LITTLE PATUXENT PA
FairOver: WILDE LAKE BRANCH
0.2 MI N OF GOV WARFIELD, Howard, MD
Built 1967 Load: 99.9 t ADT: 31,936
BUCKSKIN LAKE DRIV
FairOver: BENSON BRANCH
.01 MI S FOLLY QUARTER RD, Howard, MD
Built 1985 Load: 99.9 t ADT: 395
MAPLE LAWN BOULEVA
FairOver: TRIBURATY TO HAMMOND BRA
700 FT S OF J HOPKINS RD, Howard, MD
Built 2006 Load: 99.9 t ADT: 7,155
MAPLE LAWN BOULEVA
FairOver: HAMMOND BRANCH
1000 FT S OF J HOPKINS RD, Howard, MD
Built 2005 Load: 99.9 t ADT: 7,155
AMBERWOODS WAY
FairOver: TRIB S BR PATAPSCO RIVER
1000 FT WEST OF MD 32, Howard, MD
Built 2000 Load: 99.9 t ADT: 50
COVENTRY MEADOWS D
FairOver: TRIB S BR PATAPSCO RIVER
2500' W of Sykesville Rd, Howard, MD
Built 2000 Load: 99.9 t ADT: 20
HIGH STEPPER TRAIL
FairOver: TRIB S BR PATAPSCO RIVER
1000 ft East of River Rd, Howard, MD
Built 2000 Load: 99.9 t ADT: 20
HUNT VALLEY DRIVE
FairOver: TRIBUTARY TO LITTLE CATT
1000' S of Union Chapel, Howard, MD
Built 1995 Load: 99.9 t ADT: 20
TURF VALLEY ROAD
FairOver: LITTLE PATUXENT RIVER
1/4 MI N OF US 40, Howard, MD
Built 1980 Load: 99.9 t ADT: 1,000
GOVERNOR'S RUN LAN
FairOver: SUCKER BRANCH
1/4 MI SOUTH OF US 40, Howard, MD
Built 1980 Load: 99.9 t ADT: 150
MARTIN ROAD
FairOver: TRIB TO LITTLE PATUXENT
At Quarterstaff Rd, Howard, MD
Built 1972 Load: 99.9 t ADT: 500
N. LAUREL ROAD
FairOver: UNNAMED STREAM
1/8 M WEST OF US 1, Howard, MD
Built 1965 Load: 99.9 t ADT: 400
MD 213
FairOver: BR OF MORGAN CREEK
.507 MILE SOUTH OF MD 561, Kent, MD
Built 1955 Load: 99.9 t ADT: 4,632
MD 291
FairOver: BR OF CHESTER RIVER
0.5 MILE EAST OF MD 298, Kent, MD
Built 1962 Load: 99.9 t ADT: 3,571
MD 20
FairOver: TRIB TO GREY'S INN CREEK
0.05 miles west of MD 674, Kent, MD
Built 1960 Load: 99.9 t ADT: 1,230
MD 108
FairOver: PATUXENT RIVER
ON HOWARD CO LINE, Montgomery, MD
Built 1928 Load: 99.9 t ADT: 12,871
IS 270
FairOver: LITTLE SENECA CREEK
1.85 south of MD 121, Montgomery, MD
Built 1954 Load: 99.9 t ADT: 98,097
IS 270
FairOver: OLD FARM CREEK
0.13 MILE N OF IS 270Y, Montgomery, MD
Built 1958 Load: 99.9 t ADT: 265,320
Showing 3,701-3,750 of 5,527 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |