Structure 200000BC3101010 · Baltimore County, MD

I-83 NB over Mta Light Rail Yard

Carries I-83 NB over Mta Light Rail Yard, Sta. 150-158.

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 FT928 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

928 ft end to end, longest span 71 ft: about 2.6 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.

Built1959rebuilt 1987
Length928.1 ft282.9 m
Daily traffic117,171counted 2018
Last inspectedDecember 2024every 24 months

Location

StateMaryland
CountyBaltimore
LocationSta. 150-158
CarriesI-83 NB
CrossesMta Light Rail Yard
Coordinates39.31594, -76.62872

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length928.1 ft (282.9 m)
Max Span70.9 ft (21.6 m)
Deck Width64.3 ft (19.6 m)
Deck Area5544.8 sq m
Main Spans15
Year Built1959 (reconstructed 1987)

Traffic

Avg Daily Traffic117,171 (2018)
Truck Traffic2%
Lanes On Bridge3

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number200000BC3101010

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.

Nearby Bridges