Structure 100000030098014 · Baltimore County, MD

Md 151 Nbr over Md 150

Carries Md 151 Nbr over Md 150, 0.21 M S Of Conley Street.

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 FT168 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

168 ft end to end, longest span 81 ft: about 2 semi-trucks nose to tail. 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.

Built1942rebuilt 1980
Length168.0 ft51.2 m
Daily traffic23,941counted 2009
Last inspectedDecember 2024every 24 months

Location

StateMaryland
CountyBaltimore
Location0.21 M S Of Conley Street
CarriesMd 151 Nbr
CrossesMd 150
Coordinates39.29346, -76.51764

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length168.0 ft (51.2 m)
Max Span81.0 ft (24.7 m)
Deck Width47.9 ft (14.6 m)
Deck Area747.5 sq m
Main Spans2
Year Built1942 (reconstructed 1980)

Traffic

Avg Daily Traffic23,941 (2009)
Truck Traffic8%
Lanes On Bridge3
Lanes Under Bridge6

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100000030098014

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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