Structure 300000HOY013010 · Howard County, MD

I-895 NB Ramp over Patapsco River

Carries I-895 NB Ramp over Patapsco River, 0.1 Mi South Of I-195.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT364 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

364 ft end to end, longest span 107 ft: about 5 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
Length363.8 ft110.9 m
Daily traffic1,491counted 2019
Last inspectedSeptember 2023every 24 months

Location

StateMaryland
CountyHoward
Location0.1 Mi South Of I-195
CarriesI-895 NB Ramp
CrossesPatapsco River
Coordinates39.21764, -76.70636

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length363.8 ft (110.9 m)
Max Span107.0 ft (32.6 m)
Deck Width30.2 ft (9.2 m)
Deck Area1020.3 sq m
Main Spans6
Year Built1957

Traffic

Avg Daily Traffic1,491 (2019)
Truck Traffic2%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number300000HOY013010

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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