Structure 300000B-Y021011 · Baltimore County, MD

I-895 NB over Herbert Run

Carries I-895 NB over Herbert Run, I-895 Milepost 2.0.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT232 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

232 ft end to end, longest span 81 ft: about 3 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.

Built195769 years old
Length231.6 ft70.6 m
Daily traffic8,600counted 2021
Last inspectedApril 2024every 24 months

Location

StateMaryland
CountyBaltimore
LocationI-895 Milepost 2.0
CarriesI-895 NB
CrossesHerbert Run
Coordinates39.22214, -76.69117

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length231.6 ft (70.6 m)
Max Span81.0 ft (24.7 m)
Deck Width46.3 ft (14.1 m)
Deck Area995.5 sq m
Main Spans3
Year Built1957

Traffic

Avg Daily Traffic8,600 (2021)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number300000B-Y021011

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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