Structure 300000BCW594010 · Baltimore County, MD

Is 95 Ramp E over Herring Run Quad AVE

Carries Is 95 Ramp E over Herring Run Quad AVE, Ex 60 NB Rmp To Morav RD.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT802 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

802 ft end to end, longest span 172 ft: about 2.2 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.

Built197452 years old
Length802.2 ft244.5 m
Daily traffic6,819counted 2019
Last inspectedOctober 2023every 24 months

Location

StateMaryland
CountyBaltimore
LocationEx 60 NB Rmp To Morav RD
CarriesIs 95 Ramp E
CrossesHerring Run Quad AVE
Coordinates39.30114, -76.52998

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length802.2 ft (244.5 m)
Max Span171.9 ft (52.4 m)
Deck Width49.9 ft (15.2 m)
Deck Area3716.4 sq m
Main Spans6
Year Built1974

Traffic

Avg Daily Traffic6,819 (2019)
Truck Traffic2%
Lanes On Bridge1
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number300000BCW594010

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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