Structure 200000F-F-02020 · Frederick County, MD

Highland Street over Carroll Creek

Carries Highland Street over Carroll Creek, 0.9 Mi East Of Md 355.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT111 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

111 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 slab bridge.

Built198838 years old
Length110.9 ft33.8 m
Daily traffic5,850counted 2020
Last inspectedAugust 2024every 24 months

Location

StateMaryland
CountyFrederick
Location0.9 Mi East Of Md 355
CarriesHighland Street
CrossesCarroll Creek
Coordinates39.41594, -77.39772

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length110.9 ft (33.8 m)
Max Span21.0 ft (6.4 m)
Deck Width34.1 ft (10.4 m)
Deck Area351.5 sq m
Main Spans1
Year Built1988

Traffic

Avg Daily Traffic5,850 (2020)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number200000F-F-02020

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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