Structure 200000HO0049010 · Howard County, MD

Frederick Road over Little Patuxent River

Carries Frederick Road over Little Patuxent River, 0.5 Mi E Centennial Lane.

Overall conditionFair

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

How ratings work
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 6/9 · sets the ratingSubstructure 7/9

26 ft end to end. 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.

Built193096 years old
Length26.2 ft8 m
Daily traffic10,927counted 1998
Last inspectedApril 2023every 24 months

Location

StateMaryland
CountyHoward
Location0.5 Mi E Centennial Lane
CarriesFrederick Road
CrossesLittle Patuxent River
Coordinates39.27576, -76.85258

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length26.2 ft (8 m)
Max Span25.9 ft (7.9 m)
Deck Width29.9 ft (9.1 m)
Deck Area72.8 sq m
Main Spans1
Year Built1930

Traffic

Avg Daily Traffic10,927 (1998)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number200000HO0049010

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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