Structure 42 · District of Columbia County, DC

Marshall Drive over North Capitol Street

Carries Marshall Drive over North Capitol Street, Access RD Over N Cap ST.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT97 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

97 ft end to end. Lengths and the car 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.

Built1960rebuilt 2005
Length97.1 ft29.6 m
Daily traffic2,000counted 2007
Last inspectedFebruary 2024every 24 months

Location

StateDistrict of Columbia
CountyDistrict of Columbia
LocationAccess RD Over N Cap ST
CarriesMarshall Drive
CrossesNorth Capitol Street
Coordinates38.93667, -77.00667

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length97.1 ft (29.6 m)
Max Span92.5 ft (28.2 m)
Deck Width37.4 ft (11.4 m)
Deck Area337.4 sq m
Main Spans1
Year Built1960 (reconstructed 2005)

Traffic

Avg Daily Traffic2,000 (2007)
Truck Traffic1%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0042

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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