Structure 200000W-5651010 · Washington County, MD

Keedysville Road over Antietam Creek

Carries Keedysville Road over Antietam Creek, 0.8 Mi NW Of Md RTE 34.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT105 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

105 ft end to end, longest span 33 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 deck arch.

Built1830rebuilt 1980
Length105.0 ft32 m
Daily traffic1,173counted 2015
Last inspectedNovember 2023every 24 months

Location

StateMaryland
CountyWashington
Location0.8 Mi NW Of Md RTE 34
CarriesKeedysville Road
CrossesAntietam Creek
Coordinates39.48797, -77.71404

Physical Characteristics

MaterialMasonry
DesignArch - Deck
Total Length105.0 ft (32 m)
Max Span33.1 ft (10.1 m)
Deck Width20.0 ft (6.1 m)
Deck Area195.2 sq m
Main Spans3
Year Built1830 (reconstructed 1980)

Traffic

Avg Daily Traffic1,173 (2015)
Truck Traffic5%
Lanes On Bridge1

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical3 — Scour critical
Structure Number200000W-5651010

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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