Frederick County, MD

491 public highway bridges

Frederick County Bridge Snapshot

Frederick County, Maryland contains 491 public highway bridges in the FHWA National Bridge Inventory. Roughly 38.9% are rated “Good,” 40.3% “Fair,” 2.6% “Poor,” and 2.6% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in MD are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

491

Total Bridges

38.9%

Good

2.6%

Poor

2.6%

Structurally Deficient

Condition Distribution

Good

38.9% (191)

Fair

40.3% (198)

Poor

2.6% (13)

SD

2.6% (13)

All Bridges (491)

Sort:

MD 26

Over: BRANCH OF LINGANORE CREE

0.58 M W ALBAUGH ROAD, Frederick, MD

Built 1950 Load: 32.7 t ADT: 5,272

MD 550

Over: FRIENDS CREEK

0.15 M S OF BENTZEL ROAD, Frederick, MD

Built 1981 Load: 32.7 t ADT: 7,861

LEGORE BRIDGE ROAD

Over: MONOCACY RIVER

3 MI N OF WOODSBORO, Frederick, MD

Built 1903 Load: 32.7 t ADT: 2,045

PARK MILLS ROAD

Over: BENNETT CREEK

2.75 MI SOUTH OF MD 80, Frederick, MD

Built 1965 Load: 32.7 t ADT: 674

KEY PARKWAY

Over: ROCK CREEK

500' W OF WILLOWDALE DR., Frederick, MD

Built 1990 Load: 32.7 t ADT: 3,560

COLLEGE AVENUE

Over: CARROLL CREEK FLOODPLAIN

0.2 MI NORTH OF MD 144, Frederick, MD

Built 1992 Load: 32.7 t ADT: 1,652

NORTH McCAIN DRIVE

Over: ROCK CREEK

0.2 MI. NORTH OF US 40, Frederick, MD

Built 1996 Load: 32.7 t ADT: 9,790

CHRISTOPHERS CROSS

Over: EDISON BRANCH

2.7 MI. WEST OF US 15, Frederick, MD

Built 1989 Load: 32.7 t ADT: 4,108

HAYWARD ROAD

Over: OPOSSUM BRANCH

0.7 MILES WEST OF US 15, Frederick, MD

Built 1990 Load: 32.7 t ADT: 6,712

TUSCANNEY DRIVE

Over: EDISON BRANCH

1.3 MI WEST OF US 15, Frederick, MD

Built 1998 Load: 32.7 t ADT: 4,027

BIGGS FORD ROAD

Over: DUBLIN BRANCH

1.5 MI E OF US RTE 15, Frederick, MD

Built 2004 Load: 32.7 t ADT: 3,911

MD 75

Over: BUSH CREEK

.65 MILE SOUTH OF MD 75FB, Frederick, MD

Built 1972 Load: 33.6 t ADT: 6,492

LIMESTONE LANE

Over: BR OF HOLLOW CREEK

AT BEECHTREE LANE INTERSC, Frederick, MD

Built 1960 Load: 33.6 t ADT: 50

MD 85

Over: ROCKY FOUNTAIN RUN

0.03 MILE NORTH OF MD 880, Frederick, MD

Built 1929 Load: 34.0 t ADT: 6,713

IS 270

Over: CSX TRANSPORTATION

1.0 MILE SOUTH OF MD 85, Frederick, MD

Built 1950 Load: 34.0 t ADT: 80,340

MD 75

Over: FAHRNEY BRANCH

0.43 MILE SOUTH OF MD 80, Frederick, MD

Built 1933 Load: 34.5 t ADT: 7,952

MD 144FA

Over: MONOCACY RIVER

1.04 MILE EAST OF IS 70, Frederick, MD

Built 1955 Load: 35.4 t ADT: 13,861

MD 77

Over: BR OF HUNTING CREEK

2.72 MI E OF WASH CO, Frederick, MD

Built 1971 Load: 35.4 t ADT: 3,271

ANNANDALE ROAD

Over: TOMS CREEK

0.62 MI W OF EMMITSBURG, Frederick, MD

Built 1980 Load: 35.4 t ADT: 1,505

ARNOLDTOWN ROAD

Over: BROAD RUN

0.2 MI N PICNIC WOODS RD, Frederick, MD

Built 1982 Load: 35.4 t ADT: 339

WWTP ROAD

Over: CARROLL CREEK

1.8 MI EAST OF MD 355, Frederick, MD

Built 1936 Load: 35.4 t ADT: 3,813

W. COLLEGE TERRACE

Over: CARROLL CREEK

0.2 MI NORTH OF MD 144, Frederick, MD

Built 1933 Load: 35.4 t ADT: 4,060

US 40

Over: TRIB TO HAWBOTTOM BRANCH

0.29 MI E OF HOLLOW ROAD, Frederick, MD

Built 1936 Load: 36.3 t ADT: 5,522

DOUBS ROAD

Over: TUSCARORA CREEK

1.23 MI W OF NEW DESIGN R, Frederick, MD

Built 1950 Load: 36.3 t ADT: 327

MD 75

Over: LINGANORE CREEK

0.73 MI N OF MD 75FC, Frederick, MD

Built 1968 Load: 36.7 t ADT: 4,752

SOUTH MARKET STREE

Over: CARROLL CREEK

510' SOUTH OF MD 144, Frederick, MD

Built 1988 Load: 37.2 t ADT: 8,900

MD 77

Over: OWENS CREEK

0.02 MI W OF FRUSHOUR RD, Frederick, MD

Built 1932 Load: 38.1 t ADT: 3,131

MD 180

Over: CATOCTIN CREEK

0.55 MILE EAST OF MD 872, Frederick, MD

Built 1928 Load: 38.1 t ADT: 4,580

ROY SHAFER ROAD

Over: CONE BRANCH

AT BENNIES HILL RD INT, Frederick, MD

Built 1982 Load: 38.5 t ADT: 105

POFFENBERGER ROAD

Over: LEWIS MILL BRANCH

0.75 MI W OF OLD MIDDLETO, Frederick, MD

Built 1982 Load: 38.5 t ADT: 32

YELLOW SPRINGS ROA

Over: LITTLE TUSCARORA CREEK

0.1 MI N WALTER MARTZ RD, Frederick, MD

Built 1930 Load: 39.0 t ADT: 6,340

DEVILBISS BRIDGE R

Over: MONOCACY RIVER

0.6 MI W OF DUBLIN RD, Frederick, MD

Built 1980 Load: 39.0 t ADT: 3,371

PARK ACCESS ROAD

Over: STREAM

0.15 MILES FROM MD ROUTE, Frederick, MD

Built 1985 Load: 39.0 t ADT: 60

PARK MILLS ROAD

Over: MONOCACY RIVER

1 MI N OF MD RTE 28, Frederick, MD

Built 1979 Load: 39.5 t ADT: 557

LONGS MILL ROAD

Over: OWENS CREEK

1.8 MI E OF MD 550, Frederick, MD

Built 1979 Load: 39.5 t ADT: 670

HARNEY ROAD

Over: MIDDLE CREEK

1.12 MI E OF EMMITSBURG, Frederick, MD

Built 1971 Load: 39.5 t ADT: 811

MD 806A

Over: LITTLE HUNTING CREEK

0.84 MILE NORTH OF US 15, Frederick, MD

Built 1927 Load: 39.9 t ADT: 1,072

MD 80

Over: MONOCACY RIVER

0.08 MILE EAST OF MD 880, Frederick, MD

Built 1973 Load: 39.9 t ADT: 4,472

US 15 SB

Over: FLAT RUN

0.2 MILE SOUTH OF MD 140, Frederick, MD

Built 1965 Load: 39.9 t ADT: 18,340

US 15 SB

Over: LITTLE OWENS CREEK

1.74 MILE NORTH OF MD 550, Frederick, MD

Built 1954 Load: 40.4 t ADT: 14,250

PLEASANT VIEW RD

Over: TUSCARORA CREEK

1.14 MI N OF MD RTE 28, Frederick, MD

Built 1982 Load: 40.8 t ADT: 191

MD 17

Over: LITTLE CATOCTIN CREEK

0.03 MI N OF HARMONY RD, Frederick, MD

Built 1920 Load: 41.3 t ADT: 3,046

LINGANORE ROAD

Over: LINGANORE CREEK

0.87 MI N OF MD 144, Frederick, MD

Built 1976 Load: 41.3 t ADT: 2,702

UNIONVILLE ROAD

Over: TRIB. OF LINGANORE CREEK

AT WOODVILLE RD INT, Frederick, MD

Built 1929 Load: 41.3 t ADT: 1,309

DEVILBISS BRIDGE R

Over: FISHING CREEK

0.75 MI W OF DUBLIN RD, Frederick, MD

Built 1979 Load: 41.7 t ADT: 3,371

CREAMERY ROAD

Over: BRANCH OF FLAT RUN

0.1 MI S OF E MAIN STREET, Frederick, MD

Built 1991 Load: 42.2 t ADT: 1,817

MD 26

Over: MONOCACY RIVER

0.2 MILE WEST OF MD 194, Frederick, MD

Built 1932 Load: 42.6 t ADT: 16,275

COLLEGE AVENUE

Over: CARROLL CREEK

790' NORTH OF MD 144, Frederick, MD

Built 1925 Load: 42.6 t ADT: 1,470

MONOCACY BOULEVARD

Over: MONOCACY RIVER

0.1 MI SOUTH OF GAS HOUSE, Frederick, MD

Built 1966 Load: 42.6 t ADT: 5,912

LILY PONS ROAD

Over: MONOCACY RIVER

1 MI E OF MD RTE 85, Frederick, MD

Built 1977 Load: 43.5 t ADT: 610

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026