Structure 171-2 · District of Columbia County, DC

14th Street S.w. over Outlet Channel S.w.

Carries 14th Street S.w. over Outlet Channel S.w., 14th ST Over Outlet Ch SW.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT460 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

460 ft end to end, longest span 68 ft: about 6 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 tee-beam bridge.

Built1942rebuilt 1982
Length460.0 ft140.2 m
Daily traffic35,000counted 2018
Last inspectedMay 2024every 24 months

Location

StateDistrict of Columbia
CountyDistrict of Columbia
Location14th ST Over Outlet Ch SW
Carries14th Street S.w.
CrossesOutlet Channel S.w.
Coordinates38.88322, -77.03221

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length460.0 ft (140.2 m)
Max Span67.6 ft (20.6 m)
Deck Width86.9 ft (26.5 m)
Deck Area3715.3 sq m
Main Spans3
Year Built1942 (reconstructed 1982)

Traffic

Avg Daily Traffic35,000 (2018)
Truck Traffic4%
Lanes On Bridge6

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number0171-2

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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