Structure 200000CO0005010 · Caroline County, MD

Mason Branch Road over Mason Branch

Carries Mason Branch Road over Mason Branch, On Queen Annes Co Line.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT96 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

96 ft end to end, longest span 55 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 slab bridge.

Built1910rebuilt 2010
Length96.1 ft29.3 m
Daily traffic1,329counted 2024
Last inspectedJanuary 2024every 24 months

Location

StateMaryland
CountyCaroline
LocationOn Queen Annes Co Line
CarriesMason Branch Road
CrossesMason Branch
Coordinates39.00466, -75.91090

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length96.1 ft (29.3 m)
Max Span55.1 ft (16.8 m)
Deck Width33.1 ft (10.1 m)
Deck Area295.9 sq m
Main Spans2
Year Built1910 (reconstructed 2010)

Traffic

Avg Daily Traffic1,329 (2024)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number200000CO0005010

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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