Structure 200000BC3127010 · Baltimore County, MD

I-83 over Mta Light Rail

Carries I-83 over Mta Light Rail, At City Line.

Overall conditionPoor

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

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT874 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 4/9 · sets the rating

874 ft end to end, longest span 91 ft: about 2.4 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.

Built1962rebuilt 1987
Length874.0 ft266.4 m
Daily traffic29,900counted 2018
Last inspectedFebruary 2024every 24 months

Location

StateMaryland
CountyBaltimore
LocationAt City Line
CarriesI-83
CrossesMta Light Rail
Coordinates39.36714, -76.65045

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length874.0 ft (266.4 m)
Max Span90.9 ft (27.7 m)
Deck Width105.3 ft (32.1 m)
Deck Area8551.4 sq m
Main Spans14
Year Built1962 (reconstructed 1987)

Traffic

Avg Daily Traffic29,900 (2018)
Truck Traffic24%
Lanes On Bridge6

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number200000BC3127010

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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