Structure 3530001P0000000 · Anne Arundel County, MD

Bw Parkway over Big Patuxent River

Carries Bw Parkway over Big Patuxent River, 0.8 Miles North Of Md Rou.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT362 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

362 ft end to end, longest span 78 ft: about 5 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.

Built1953rebuilt 1991
Length361.9 ft110.3 m
Daily traffic105,000counted 2022
Last inspectedApril 2024every 24 months

Location

StateMaryland
CountyAnne Arundel
Location0.8 Miles North Of Md Rou
CarriesBw Parkway
CrossesBig Patuxent River
Coordinates39.07067, -76.83019

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length361.9 ft (110.3 m)
Max Span78.1 ft (23.8 m)
Deck Width98.4 ft (30 m)
Deck Area3,309 sq m
Main Spans5
Year Built1953 (reconstructed 1991)

Traffic

Avg Daily Traffic105,000 (2022)
Truck Traffic1%
Lanes On Bridge4

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerNational Park Service
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number3530001P0000000

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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