Structure 100000180033010 · St. Mary's County, MD

Md 4 over Kingston Creek

Carries Md 4 over Kingston Creek, 2.07 Miles N Of Md 235.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT276 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

276 ft end to end, longest span 110 ft: about 4 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.

Built198046 years old
Length275.9 ft84.1 m
Daily traffic26,801counted 2009
Last inspectedNovember 2024every 24 months

Location

StateMaryland
CountySt. Mary's
Location2.07 Miles N Of Md 235
CarriesMd 4
CrossesKingston Creek
Coordinates38.31631, -76.49133

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length275.9 ft (84.1 m)
Max Span109.9 ft (33.5 m)
Deck Width50.5 ft (15.4 m)
Deck Area1295.1 sq m
Main Spans3
Year Built1980

Traffic

Avg Daily Traffic26,801 (2009)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number100000180033010

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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