Structure 200000BC5206013 · Baltimore County, MD

Patapsco Avenue EB over Patapsco River

Carries Patapsco Avenue EB over Patapsco River, 2 Mi E Bal Wash Expr.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,654 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 4/9

1,654 ft end to end, longest span 50 ft: about 4.6 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.

Built1961rebuilt 1996
Length1653.9 ft504.1 m
Daily traffic6,300counted 2022
Last inspectedApril 2024every 12 months

Location

StateMaryland
CountyBaltimore
Location2 Mi E Bal Wash Expr
CarriesPatapsco Avenue EB
CrossesPatapsco River
Coordinates39.23978, -76.61381

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1653.9 ft (504.1 m)
Max Span49.9 ft (15.2 m)
Deck Width44.6 ft (13.6 m)
Deck Area6855.8 sq m
Main Spans33
Year Built1961 (reconstructed 1996)

Traffic

Avg Daily Traffic6,300 (2022)
Truck Traffic3%
Lanes On Bridge3

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 12 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number200000BC5206013

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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