Structure 100000020048010 · Anne Arundel County, MD

Md 175 over Amtrak

Carries Md 175 over Amtrak, 0.37 Mile North Of Md 170.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT196 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

196 ft end to end: 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.

Built1938rebuilt 1966
Length195.9 ft59.7 m
Daily traffic28,180counted 2018
Last inspectedJune 2023every 24 months

Location

StateMaryland
CountyAnne Arundel
Location0.37 Mile North Of Md 170
CarriesMd 175
CrossesAmtrak
Coordinates39.08967, -76.70522

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length195.9 ft (59.7 m)
Max Span84.0 ft (25.6 m)
Deck Width67.9 ft (20.7 m)
Deck Area1235.8 sq m
Main Spans1
Year Built1938 (reconstructed 1966)

Traffic

Avg Daily Traffic28,180 (2018)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100000020048010

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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