Structure 200000BC1114010 · Baltimore County, MD

I-83 Ramp D over Ramp B

Carries I-83 Ramp D over Ramp B, 0.3 Mi. E Of Calvert ST.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT730 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

730 ft end to end, longest span 104 ft: about 2.0 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.

Built197650 years old
Length730.3 ft222.6 m
Daily traffic2,861counted 2022
Last inspectedMarch 2024every 24 months

Location

StateMaryland
CountyBaltimore
Location0.3 Mi. E Of Calvert ST
CarriesI-83 Ramp D
CrossesRamp B
Coordinates39.30108, -76.61100

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length730.3 ft (222.6 m)
Max Span104.0 ft (31.7 m)
Deck Width24.0 ft (7.3 m)
Deck Area1625.0 sq m
Main Spans9
Year Built1976

Traffic

Avg Daily Traffic2,861 (2022)
Truck Traffic8%
Lanes On Bridge1
Lanes Under Bridge3

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number200000BC1114010

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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