Structure 300000P-WM13010 · Prince George's County, MD

Greenbelt Metro DR over I-495

Carries Greenbelt Metro DR over I-495, 0.2 Mi. W. Of Cherrywood.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT686 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

686 ft end to end, longest span 140 ft: about 1.9 football fields. 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.

Built198937 years old
Length686.0 ft209.1 m
Daily traffic3,326counted 2017
Last inspectedApril 2023every 24 months

Location

StateMaryland
CountyPrince George's
Location0.2 Mi. W. Of Cherrywood
CarriesGreenbelt Metro DR
CrossesI-495
Coordinates39.01319, -76.90439

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length686.0 ft (209.1 m)
Max Span140.1 ft (42.7 m)
Deck Width32.2 ft (9.8 m)
Deck Area2049.2 sq m
Main Spans5
Year Built1989

Traffic

Avg Daily Traffic3,326 (2017)
Lanes On Bridge1
Lanes Under Bridge8

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerRailroad
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number300000P-WM13010

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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