Structure 100000190012011 · Somerset County, MD

US 13 NB over Manokin River

Carries US 13 NB over Manokin River, 0.05 Mile North Of Md 363.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT86 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

86 ft end to end, longest span 41 ft. Lengths and the car 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.

Built1958rebuilt 1980
Length86.0 ft26.2 m
Daily traffic22,370counted 2009
Last inspectedFebruary 2023every 24 months

Location

StateMaryland
CountySomerset
Location0.05 Mile North Of Md 363
CarriesUS 13 NB
CrossesManokin River
Coordinates38.20442, -75.69885

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length86.0 ft (26.2 m)
Max Span41.0 ft (12.5 m)
Deck Width50.5 ft (15.4 m)
Deck Area403.5 sq m
Main Spans2
Year Built1958 (reconstructed 1980)

Traffic

Avg Daily Traffic22,370 (2009)
Truck Traffic8%
Lanes On Bridge3

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number100000190012011

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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