Loudoun County, VA

442 public highway bridges

Loudoun County Bridge Snapshot

Loudoun County, Virginia contains 442 public highway bridges in the FHWA National Bridge Inventory. Roughly 45.9% are rated “Good,” 37.3% “Fair,” 1.1% “Poor,” and 1.1% 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 VA 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.

442
Total Bridges
45.9%
Good
1.1%
Poor
1.1%
Structurally Deficient

Condition Distribution

Good
45.9% (203)
Fair
37.3% (165)
Poor
1.1% (5)
SD
1.1% (5)

All Bridges (442)

SNICKERSVILLE RD.

Fair

Over: BR BEAVERDAM CREEK

00.50FR730/00.70TO735, Loudoun, VA

Built 1966 Load: 32.7 t ADT: 1,800

SNAKE HILL ROAD

Fair

Over: TRIBUTARY OF GOOSE CREEK

00.20FR743/00.40TO626, Loudoun, VA

Built 1972 Load: 32.7 t ADT: 104

STERLING BOULEVARD

Fair

Over: INDIAN CREEK

00.00FR636/00.20TO864, Loudoun, VA

Built 1961 Load: 32.7 t ADT: 25,254

ALGONKIAN PARKWAY

Fair

Over: TRIB.OF POTOMAC RIVER

00.30FR1570/00.06TO1593, Loudoun, VA

Built 1985 Load: 32.7 t ADT: 13,907

RAMP-CASCADES PKWY

Fair

Over: LAKE INLET

00.10FR7/00.15TO1794, Loudoun, VA

Built 1991 Load: 32.7 t ADT: 7,708

INNISBROOK CIRCLE

Fair

Over: TRIB. OF JACKS RUN

00.90FR782N/00.25TO782S, Loudoun, VA

Built 1989 Load: 32.7 t ADT: 174

WOODLAND RD

Fair

Over: STORM WATER POND

00.15fr1902 00.58to637, Loudoun, VA

Built 1993 Load: 32.7 t ADT: 9,225

SAARINEN CIRCLE

Fair

Over: COMMERCIAL VEHICLE DRIVE

DULLES AIRPORT TERMINAL E, Loudoun, VA

Built 1993 Load: 32.7 t ADT: 13,000

JOHN MOSBY HWY.

Fair

Over: MILL RACE

00.45FR631/00.01TO612, Loudoun, VA

Built 1929 Load: 33.6 t ADT: 9,058

JOHN S. MOSBY HWY

Fair

Over: LENAH RUN

.20mi Fr 600/.70mi To 616, Loudoun, VA

Built 1935 Load: 33.6 t ADT: 19,730

EB DIAAH

Fair

Over: HORSEPEN RUN

1.3 MILES FROM DULLES AIR, Loudoun, VA

Built 1960 Load: 33.6 t ADT: 13,000

WB DIAAH ENTRANCE

Fair

Over: HORSEPEN RUN

1.3 MILES FROM DULLES AIR, Loudoun, VA

Built 1997 Load: 33.6 t ADT: 13,000

QUAKER LANE

Fair

Over: BEAVERDAM CREEK

01.60FR743 / 00.05TO790, Loudoun, VA

Built 1915 Load: 34.5 t ADT: 48

BERLIN TURNPIKE

Fair

Over: RICHARD CREEK

00.05FR693/00.8TO 697, Loudoun, VA

Built 1938 Load: 35.3 t ADT: 11,147

TELEGRAPH SPRGS RD

Fair

Over: NO. FORK GOOSE CREEK

00.52FR622/00.05TO794, Loudoun, VA

Built 1957 Load: 35.9 t ADT: 307

SNICKERSVILLE RD.

Fair

Over: GOOSE CREEK

00.40FR748/00.70TO733, Loudoun, VA

Built 1958 Load: 36.2 t ADT: 1,931

AIRMONT ROAD

Fair

Over: S FORK BEAVERDAM CREEK

00.40FR626/00.50TO619, Loudoun, VA

Built 1962 Load: 36.3 t ADT: 552

YELLOW SCHOOLHOUSE

Fair

Over: N. F. BEAVERDAM CREEK

01.68 7 / 00.62 734, Loudoun, VA

Built 1976 Load: 36.3 t ADT: 115

ELKLICK ROAD

Fair

Over: ELK LICK RUN

01.20FR50/00.90TO620, Loudoun, VA

Built 2002 Load: 36.6 t ADT: 2,422

ASHBURN ROAD

Fair

Over: BEAVERDAM RUN

00.34FR.677/00.62TO640, Loudoun, VA

Built 1959 Load: 37.8 t ADT: 6,010

EVERGREEN MILLS RD

Fair

Over: BROAD RUN

00.10FR659/00.30TO659, Loudoun, VA

Built 1971 Load: 38.1 t ADT: 16,665

SAINT CLAIR LANE

Fair

Over: CLARKS RUN

00.65FR15/01.25TO662, Loudoun, VA

Built 1977 Load: 38.1 t ADT: 664

CLARKES GAP RD

Fair

Over: BR.OF CATOCTIN CREEK

0.10FR704 0.15TO665, Loudoun, VA

Built 1969 Load: 38.1 t ADT: 4,648

DRY MILL ROAD

Fair

Over: DRY MILL BRANCH

00.00FR1015/00.03TO769, Loudoun, VA

Built 1985 Load: 38.1 t ADT: 4,226

620 BRADDOCK RD.

Fair

Over: FOLEY BRANCH

00.40FR659/01.08TO616, Loudoun, VA

Built 2006 Load: 38.1 t ADT: 6,669

RAMP A OF ROUTE 28

Fair

Over: BROAD RUN

00.20 fr 28 / 00.10 to 7, Loudoun, VA

Built 1991 Load: 38.6 t ADT: 36,769

MILLTOWN ROAD

Fair

Over: MILLTOWN CREEK

00.02FR682/00.02TO682, Loudoun, VA

Built 1970 Load: 39.0 t ADT: 1,957

EDGEWATER STREET

Fair

Over: TRIB. ELKLICK RUN

.02 FR Evian /.01 TO Natu, Loudoun, VA

Built 1996 Load: 39.0 t ADT: 4,365

WILLISVILLE ROAD

Fair

Over: PANTHER SKIN CREEK

00.75FR.50/00.80TO743, Loudoun, VA

Built 1957 Load: 39.4 t ADT: 793

UNISON ROAD

Fair

Over: DOG BRANCH

00.85FR700/ 00.70 626, Loudoun, VA

Built 1955 Load: 40.6 t ADT: 51

JAMES MADISON HIWY

Fair

Over: CLARKS RUN

02.00TO658 / 00.40FR662, Loudoun, VA

Built 1987 Load: 40.8 t ADT: 19,599

SASSAFRAS ROAD

Fair

Over: SIMPSON'S CREEK

00.02FR END/00.02TO712, Loudoun, VA

Built 1994 Load: 40.8 t ADT: 214

SAINT LOUIS ROAD

Fair

Over: N/F BEAVERDAM CREEK

00.40FR734/00.90TO630, Loudoun, VA

Built 1961 Load: 40.9 t ADT: 2,699

PLANTING FIELD DR

Fair

Over: TRIB. ELKLICK RUN

0.43 FR 0000/0.10 TO 0000, Loudoun, VA

Built 2000 Load: 41.2 t ADT: 1,429

HARRY BYRD HIGHWAY

Fair

Over: BROAD RUN

0.20 Fr 1060/0.20 To 28, Loudoun, VA

Built 1969 Load: 41.4 t ADT: 71,111

Loudoun Co. Pkwy.

Fair

Over: TRIBUTARY OF RUSSELL BR.

00.15FR7/03.20TO625, Loudoun, VA

Built 1990 Load: 42.6 t ADT: 149

HARRISON STREET

Fair

Over: TUSCARORA CREEK

00.15FR1009/00.10 TO END, Loudoun, VA

Built 1964 Load: 42.6 t ADT: 4,000

OLD EASTBOUND EXIT

Fair

Over: HORSEPEN RUN

1.3 MILES FROM DULLES AIR, Loudoun, VA

Built 1960 Load: 42.6 t ADT: 10,000

OLD WHEATLAND ROAD

Fair

Over: SOUTH FORK CATOCTIN CK.

00.15FR681/00.05TO662, Loudoun, VA

Built 1955 Load: 43.2 t ADT: 2,208

JAMES MONROE HWY

Fair

Over: SYCOLIN CREEK

00.02FR704/01.90TO651, Loudoun, VA

Built 1969 Load: 43.5 t ADT: 14,218

EVERGREEN MILLS RD

Fair

Over: NORTH FORK OF BROAD RUN

01.50FR616/00.50TO659, Loudoun, VA

Built 1973 Load: 43.5 t ADT: 6,212

ALGONKIAN PARKWAY

Fair

Over: TRIB. POTOMAC RIVER

00.10FR1962/00.05TO1963, Loudoun, VA

Built 1992 Load: 43.5 t ADT: 12,096

OLD OX ROAD

Fair

Over: Indian Creek

00.03FR775/00.50TO634, Loudoun, VA

Built 1994 Load: 43.5 t ADT: 32,235

ASHBURN VILL. SB

Fair

Over: W&OD HIKE & BIKE TRAIL

02.40FR7/01.00TO640, Loudoun, VA

Built 1991 Load: 45.0 t ADT: 8,851

ASHBURN VILL. NB

Fair

Over: W&OD HIKE & BIKE TRAIL

02.40FR7/01.00TO640, Loudoun, VA

Built 1991 Load: 45.0 t ADT: 8,851

EB DULLES GREENWAY

Fair

Over: SYCOLIN CREEK

03.26FR7-15/02.31TO659, Loudoun, VA

Built 1995 Load: 46.4 t ADT: 13,639

WB DULLES GREENWAY

Fair

Over: SYCOLIN CREEK

03.26FR7-15/02.31TO659, Loudoun, VA

Built 1995 Load: 46.4 t ADT: 14,193

MILLTOWN ROAD

Fair

Over: N. F. OF CATOCTIN CREEK

00.67FR694/01.10TO698, Loudoun, VA

Built 1970 Load: 48.0 t ADT: 3,476

GUM SPRINGS ROAD

Fair

Over: BULL RUN

00.30fr234/02.80to613, Loudoun, VA

Built 1968 Load: 48.3 t ADT: 13,468

RAMP "Q"

Fair

Over: HORSEPEN RUN

1.3 MILES FROM DULLES AIR, Loudoun, VA

Built 2007 Load: 49.0 t ADT: 22,000

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

Related

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