Structure 100000100086010 · Frederick County, MD

Md 355 over Bennett Creek

Carries Md 355 over Bennett Creek, 1.06 Miles South Of Md 80.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT165 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

165 ft end to end, longest span 80 ft: about 2 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.

Built20224 years old
Length165.0 ft50.3 m
Daily traffic9,500counted 2015
Last inspectedJune 2024every 24 months

Location

StateMaryland
CountyFrederick
Location1.06 Miles South Of Md 80
CarriesMd 355
CrossesBennett Creek
Coordinates39.31737, -77.33347

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length165.0 ft (50.3 m)
Max Span80.1 ft (24.4 m)
Deck Width44.9 ft (13.7 m)
Deck Area689.1 sq m
Main Spans2
Year Built2022

Traffic

Avg Daily Traffic9,500 (2015)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number100000100086010

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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