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)

Sort:

HARRY BYRD HWY WB

Over: Airmont Rd. 719

00.68FR.7BIS./03.10TO711, Loudoun, VA

ROUTE 7 BYPASS WBL

Over: RTE 7 BUSINESS

3.85FR.287/01.20TO7Bus(W), Loudoun, VA

RTE.7 CONN. RAMP

Over: Rte 7 HARRY BYRD HWY.

00.10FR7BUS/00.15TO7EBL, Loudoun, VA

RAMP D FROM RT 7WB

Over: ROUTE 7

00.05FR.7WB/00.05TO28SB, Loudoun, VA

RTE. 7 BYPASS WBL

Over: HAMILTON STATION ROAD

02.33FR9/00.98TO709, Loudoun, VA

ROUTE 7 BYPASS WB

Over: IVANDALE ROAD

01.07FR704/01.16TO287, Loudoun, VA

ROUTE 7 BYPASS

Over: BERLIN TURNPIKE RTE. 287

02.20FR704/04.05TO7 BUS., Loudoun, VA

HARRY BYRD HWY. EB

Over: RTE 15 - KING STREET

1.80mi.Fr 7/0.65mi.To 267, Loudoun, VA

HARRY BYRD HWY. WB

Over: RTE 15 KING STREET

01.80FR7/01.20TO643, Loudoun, VA

CHARLESTOWN PIKE

Over: RTE. 7 BYPASS

00.61FR662/00.07TO7, Loudoun, VA

Rte. 28 NB

Over: DULLES ACCESS RD

0.96FR608/01.21TO606, Loudoun, VA

Rte. 28 SB

Over: DULLES ACCESS ROAD

02.10FR668 / 01.21TO606, Loudoun, VA

RAMP A OVER RTE. 7

Over: ROUTE 7

0.10 Fr 7EBL/0.10 To 7WBL, Loudoun, VA

RAMP A OF RTE. 28

Over: RAMP D OF ROUTE 7

0.50 Fr 638/0.15 To 7 WBL, Loudoun, VA

PURCELLVILLE ROAD

Over: ROUTE 7 BYPASS

00.93FR711/00.57TO7BUS., Loudoun, VA

HILLSBORO ROAD

Over: ROUTE 7 BYPASS

01.19FR711/00.15TO F962, Loudoun, VA

BELL ROAD

Over: ROUTE 7 BYPASS

00.39 7 BUS / 01.13 719, Loudoun, VA

CHILDRENS CENTER R

Over: ROUTE 7 BYPASS

.10Fr Cat.Cir/.05To Dead, Loudoun, VA

DRY MILL ROAD

Over: ROUTE 7 BYPASS

00.35FR769/00.20TOANNE ST, Loudoun, VA

MARKET ST.E.(7EBL)

Over: ROUTE 15 BYPASS

00.30FR733/00.40TO654, Loudoun, VA

MARKET ST.E.(7WBL)

Over: ROUTE 15 BYPASS

00.30FR773/00.40TO654, Loudoun, VA

CASCADES PARKWAY

Over: HARRY BYRD HWY; ROUTE 7

0.40 Fr 1792/0.40 To 1795, Loudoun, VA

SULLY RD. (RAMP A)

Over: SULLY ROAD AND RAMP F

00.60FR28/00.50TO DAAR, Loudoun, VA

SULLY RD. (RAMP A)

Over: RTE.267 CD; EB & WB DAAR

00.30FR28/00.60TO DAAR, Loudoun, VA

DTRE-RAMPS A&D

Over: RTE. 7/15 BYPASS

00.10FR7&15/05.55TO659, Loudoun, VA

OLD OX ROAD

Over: DULLES GREENWAY-RTE.267

02.73FR614/01.00TO775, Loudoun, VA

WAXPOOL ROAD

Over: DULLES GREENWAY

01.80FR659/00.60TO641, Loudoun, VA

RTE. 7 BYPASS EB

Over: HAMILTON STATION ROAD

00.98FR709/02.33TO9, Loudoun, VA

Ashburn Vill. Blv

Over: DULLES GREENWAY

00.65FR645/00.38TO625, Loudoun, VA

DULLES GREENWAY EB

Over: SULLY ROAD (ROUTE 28)

02.60FR606/01.40TO657, Loudoun, VA

HARRY BYRD HIGHWAY

Over: AIRMONT ROAD - 719

0.7FR7BUS.E/0.50TO7BUS.W, Loudoun, VA

ROUTE 7 BYPASS EBL

Over: ROUTE 7 BUSINESS

01.20FR7BUS.W/03.85TO287, Loudoun, VA

ROUTE 7 BP;EBL

Over: IVANDALE ROAD & RTE 709

01.01FR704 & 01.16TO287, Loudoun, VA

ROUTE 7 BP; EBL

Over: BERLIN TPKE; ROUTE 287

02.20FR704___04.05TO7, Loudoun, VA

SYCOLIN ROAD

Over: RTE. 267-DULLES GREENWAY

00.03fr648/00.70to653, Loudoun, VA

SHREVE MILL ROAD

Over: DULLES GREENWAY

00.80fr621/00.60to643, Loudoun, VA

SYCOLIN ROAD

Over: DULLES GREENWAY-RTE.267

01.25FR648/00.35TO659, Loudoun, VA

BELMONT RIDGE ROAD

Over: DULLES GREENWAY & RAMP D

01.83FR625/00.30TO640, Loudoun, VA

DULLES GREENWAY EB

Over: CLAIBORNE PARKWAY

00.90FR659/01.60TO772, Loudoun, VA

DULLES GREENWAY WB

Over: CLAIBORNE PARKWAY

00.90FR659/01.60TO772, Loudoun, VA

DULLES GREENWAY EB

Over: BROADLANDS BLVD.

00.52FR901/01.10TO772, Loudoun, VA

DULLES GREENWAY WB

Over: BROADLANDS BLVD.

00.52FR901/01.10TO772, Loudoun, VA

LOUDOUN CO. PKWY.

Over: DULLES GREENWAY

01.60FR772/01.68TO625, Loudoun, VA

RAMP H OF D.GRNWAY

Over: DULLES GREENWAY & RAMP G

00.50FR267/00.40TO28, Loudoun, VA

GATE 14 ACCESS RD.

Over: DULLES GREENWAY

00.30FR606/00.25TO GATE14, Loudoun, VA

RAMP G OF D.GRNWAY

Over: DULLES GREENWAY

00.94FR DAAR/00.26TO267WB, Loudoun, VA

D. GREENWAY RAMP I

Over: SULLY ROAD SBL (RTE. 28)

00.15FR28NB/02.35TO606, Loudoun, VA

DULLES GREENWAY EB

Over: EBL 267 CD; RAMP B; DAAR

03.00FR606/01.10TO657, Loudoun, VA

ROUTE 7 RAMP A

Over: RTEs 7&15 RAMPS C;D;E&G

0.3 FR654 & 0.40 TO 643, Loudoun, VA

HARRY BYRD HWY

Over: RTE.1582 ALGONKIAN PKWY

00.90FR777/00.30TO28, Loudoun, VA

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 5, 2026