Structure 28670 · Fairfax County, VA

I-495 Nbl over Rte.50

Carries I-495 Nbl over Rte.50, 00.83fr0650/01.29to0066.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT185 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

185 ft end to end, longest span 93 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.

Built201016 years old
Length185.0 ft56.4 m
Daily traffic151,785counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateVirginia
CountyFairfax
Location00.83fr0650/01.29to0066
CarriesI-495 Nbl
CrossesRte.50
Coordinates38.86553, -77.21993

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length185.0 ft (56.4 m)
Max Span92.5 ft (28.2 m)
Deck Width100.1 ft (30.5 m)
Deck Area1720.2 sq m
Main Spans2
Year Built2010

Traffic

Avg Daily Traffic151,785 (2022)
Truck Traffic6%
Lanes On Bridge6
Lanes Under Bridge10

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000028670

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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