Structure 200000BC4133010 · Baltimore County, MD

Keith Avenue Viadu over Newkirk ST Old Keith Av

Carries Keith Avenue Viadu over Newkirk ST Old Keith Av, Keith AVE Over Newkirk ST.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,108 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

1,108 ft end to end, longest span 130 ft: about 3.1 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.

Built198145 years old
Length1107.9 ft337.7 m
Daily traffic24,450counted 2007
Last inspectedAugust 2024every 24 months

Location

StateMaryland
CountyBaltimore
LocationKeith AVE Over Newkirk ST
CarriesKeith Avenue Viadu
CrossesNewkirk ST Old Keith Av
Coordinates39.26551, -76.55556

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1107.9 ft (337.7 m)
Max Span129.9 ft (39.6 m)
Deck Width52.8 ft (16.1 m)
Deck Area5437.0 sq m
Main Spans15
Year Built1981

Traffic

Avg Daily Traffic24,450 (2007)
Truck Traffic5%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number200000BC4133010

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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