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:

BETHEL ROAD

Over: FISHING CREEK

AT FISH HATCHERY RD INT, Frederick, MD

Built 1961 Load: 43.5 t ADT: 2,050

PROVINCIAL PARKWAY

Over: FLAT RUN

AT N SETON AVE INTERSECTN, Frederick, MD

Built 1991 Load: 44.0 t ADT: 953

MD 140

Over: MIDDLE CREEK

0.72 MI S OF MD 904G, Frederick, MD

Built 1932 Load: 44.4 t ADT: 4,480

MD 28

Over: BR OF POTOMAC RIVER

0.58 MI E OF ROCK HALL RD, Frederick, MD

Built 1937 Load: 44.9 t ADT: 6,272

US 40 WBR

Over: ROCK CREEK

0.01 M E OF ROCK CREEK DR, Frederick, MD

Built 1936 Load: 44.9 t ADT: 20,782

MILL ISLAND PKWY

Over: TUSCARORA CREEK

0.9 MI. NORTH OF MD 26, Frederick, MD

Built 1996 Load: 44.9 t ADT: 4,274

MD 180

Over: LITTLE CATOCTIN CREEK

1.31 MILES WEST OF MD 79, Frederick, MD

Built 1912 Load: 45.4 t ADT: 1,300

MD 180 WESTBOUND

Over: US 15

0.49 MILE EAST OF IS 70, Frederick, MD

Built 1968 Load: 45.4 t ADT: 27,750

IS 270

Over: MONOCACY RIVER

1.32 MILE SOUTH OF MD 85, Frederick, MD

Built 1950 Load: 45.8 t ADT: 80,340

MD 85

Over: BALLENGER CREEK

1.3 MILES SOUTH OF IS 270, Frederick, MD

Built 1926 Load: 46.3 t ADT: 17,450

REICHS FORD ROAD

Over: MONOCACY RIVER

1.5 MILES SOUTH OF I-70, Frederick, MD

Built 1973 Load: 47.2 t ADT: 3,711

LINKS BRIDGE ROAD

Over: MONOCACY RIVER

0.18 MI W OF DUBLIN ROAD, Frederick, MD

Built 1980 Load: 47.2 t ADT: 1,620

ROCKY RIDGE ROAD (

Over: MONOCACY RIVER

1.3 MI W OF CARROLL CO, Frederick, MD

Built 1932 Load: 48.1 t ADT: 937

N. BENTZ STREET

Over: CARROLL CREEK

365' NORTH OF MD 144, Frederick, MD

Built 1992 Load: 49.9 t ADT: 7,250

IS 70 EB

Over: CSX TRANS.

.09 M E OF BILL MOXLEY RD, Frederick, MD

Built 1954 Load: 50.8 t ADT: 67,891

IS 270 NB

Over: BENNETT CREEK

1.26 MI. N. OF MD 80, Frederick, MD

Built 1950 Load: 50.8 t ADT: 88,192

IS 270 SB

Over: BENNETT CREEK

1.26 MI. N. OF MD 80, Frederick, MD

Built 1950 Load: 50.8 t ADT: 88,192

IS 70 WB

Over: CSX TRANS.

.09 M E OF BILL MOXLEY RD, Frederick, MD

Built 1954 Load: 51.2 t ADT: 67,891

IS 270

Over: BRANCH OF BENNETT CREEK

0.21 M S OF BR NO 1017900, Frederick, MD

Built 1951 Load: 51.2 t ADT: 86,751

IJAMSVILLE ROAD

Over: BUSH CREEK

1.2 MI N OF MD RTE 80, Frederick, MD

Built 2016 Load: 51.7 t ADT: 3,667

MD 77

Over: HUNTING CREEK

0.29 MILE WEST OF US 15, Frederick, MD

Built 1970 Load: 52.6 t ADT: 4,351

US 15 NBR

Over: TOMS CREEK

0.65 MILE N OF US 15BU, Frederick, MD

Built 1980 Load: 52.6 t ADT: 18,340

MD 75

Over: BENNETT CREEK

1.62 MILES N OF MD 355, Frederick, MD

Built 1974 Load: 53.5 t ADT: 7,952

TIMMONS ROAD

Over: LINGANORE CREEK

AT GLISSANS MILL RD INT, Frederick, MD

Built 1974 Load: 54.4 t ADT: 276

OLD FREDERICK ROAD

Over: HUNTING CREEK

1.5 MILES SOUTH OF MD 550, Frederick, MD

Built 1995 Load: 55.3 t ADT: 3,445

MD 806A

Over: HIGH RUN

0.41 MILE NORTH OF US 15G, Frederick, MD

Built 1950 Load: 56.7 t ADT: 1,072

STOTTLEMYER ROAD

Over: MIDDLE CREEK

0.1 MI NE OF MD 17, Frederick, MD

Built 1977 Load: 56.7 t ADT: 1,456

PETERSVILLE ROAD

Over: LITTLE CATOCTIN CREEK

0.61 MI N OF MD 871G, Frederick, MD

Built 1941 Load: 57.6 t ADT: 3,270

IS 70 EBR

Over: CATOCTIN CREEK

0.60 MILE EAST OF MD 17, Frederick, MD

Built 1968 Load: 59.4 t ADT: 68,230

IS 70 WB

Over: CATOCTIN CREEK

0.60 MILE EAST OF MD 17, Frederick, MD

Built 1968 Load: 59.4 t ADT: 68,230

ALBERT STAUB ROAD

Over: OWENS CREEK

0.5 M N OF EYLER ROAD, Frederick, MD

Built 1982 Load: 59.9 t ADT: 1,323

MT EPHRAIM ROAD

Over: BENNETT CREEK

0.37 MI S OF PARK MILLS R, Frederick, MD

Built 1974 Load: 59.9 t ADT: 260

US 15

Over: OWENS CREEK

0.6 MILE NORTH OF MD 550, Frederick, MD

Built 1954 Load: 60.8 t ADT: 27,210

MD 17

Over: MIDDLE CREEK

1.64 MILES N0RTH OF US 40, Frederick, MD

Built 1889 Load: 61.2 t ADT: 1,951

SUGARLOAF MTN RD

Over: BR OF BENNETT CREEK

0.12 MI S OF THURSTON RD, Frederick, MD

Built 1981 Load: 61.7 t ADT: 133

THURSTON ROAD

Over: BENNETT CREEK

0.75 MI S OF PETERS RD, Frederick, MD

Built 1964 Load: 63.0 t ADT: 1,632

FOXVLLE DEERFIELD

Over: OWENS CREEK

0.25 MI NW OF MD 550, Frederick, MD

Built 1978 Load: 63.0 t ADT: 561

US 15 NBR

Over: LITTLE OWENS CREEK

1.74 MILE NORTH OF MD 550, Frederick, MD

Built 1982 Load: 63.5 t ADT: 27,210

S. CARROLL STREET

Over: CARROLL CREEK

470' SOUTH OF SR 144, Frederick, MD

Built 1991 Load: 63.5 t ADT: 10,130

MD 77

Over: HUNTING CREEK

1.15 M W OF PRYOR ROAD, Frederick, MD

Built 1970 Load: 64.9 t ADT: 3,271

US 15 RAMP 'J'

Over: HUNTING CREEK

0.03 MI S OF MD 77, Frederick, MD

Built 1985 Load: 65.3 t ADT: 500

MOUNTAINDALE ROAD

Over: FISHING CREEK

AT PUTNAM RD INT, Frederick, MD

Built 1979 Load: 66.2 t ADT: 346

MOUNTAINDALE ROAD

Over: LITTLE FISHING CREEK

0.1 MI W OF GAMBRILL PARK, Frederick, MD

Built 1982 Load: 66.7 t ADT: 106

LILY PONS ROAD

Over: SMALL STREAM

0.1 MI EAST OF MD RTE 85, Frederick, MD

Built 1976 Load: 67.6 t ADT: 394

SUNDAYS LANE

Over: TUSCARORA CREEK

0.25 MI E OPOSSUMTOWN PIK, Frederick, MD

Built 1978 Load: 68.0 t ADT: 505

US 40

Over: LITTLE CATOCTIN CREEK

0.2 M E OF HARMONY ROAD, Frederick, MD

Built 1936 Load: 68.9 t ADT: 5,522

DAYSVILLE ROAD

Over: ISRAEL CREEK

0.5 MI E OF MD RTE 194, Frederick, MD

Built 1990 Load: 68.9 t ADT: 1,392

CRUM ROAD

Over: ISRAEL CREEK

0.5 MI S OF WALKERSVILLE, Frederick, MD

Built 1994 Load: 68.9 t ADT: 3,121

US 15

Over: MARYLAND MIDLAND RR

0.26 MILE SOUTH OF MD 550, Frederick, MD

Built 1957 Load: 69.8 t ADT: 28,321

MILT SUMMERS ROAD

Over: GRINDSTONE RUN

0.13 MILES WEST OF MD 17, Frederick, MD

Built 1977 Load: 72.6 t ADT: 1,657

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