Structure 6465 · Fairfax County, VA

Chainbridge RD Nbl over Leesburg Pike; Route 7

Carries Chainbridge RD Nbl over Leesburg Pike; Route 7, 0.37fr677/0.26to684.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT213 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 6/9

213 ft end to end, longest span 64 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built196561 years old
Length212.9 ft64.9 m
Daily traffic27,000counted 2022
Last inspectedDecember 2024every 23 months

Location

StateVirginia
CountyFairfax
Location0.37fr677/0.26to684
CarriesChainbridge RD Nbl
CrossesLeesburg Pike; Route 7
Coordinates38.91890, -77.23130

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length212.9 ft (64.9 m)
Max Span64.0 ft (19.5 m)
Deck Width32.2 ft (9.8 m)
Deck Area636.0 sq m
Main Spans4
Year Built1965

Traffic

Avg Daily Traffic27,000 (2022)
Truck Traffic1%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 23 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000006465

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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