Loudoun County, VA

442 public highway bridges

Loudoun County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Loudoun County, Virginia contains 442 public highway bridges. Roughly 45.9% are rated “Good,” 37.3% “Fair,” and 1.1% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

442
Total Bridges
45.9%
Good
37.3%
Fair
1.1%
Poor Condition

Condition Distribution

Good
45.9% (203)
Fair
37.3% (165)
Poor
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.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.