Structure 9989 · Chester County, PA

Exton Bypass(wb) over Clover Mill Road

Carries Exton Bypass(wb) over Clover Mill Road, Clover Bus Park 31d01.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT107 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

107 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 box-beam bridge.

Built199531 years old
Length107.0 ft32.6 m
Daily traffic29,961counted 2023
Last inspectedJune 2024every 24 months

Location

StatePennsylvania
CountyChester
LocationClover Bus Park 31d01
CarriesExton Bypass(wb)
CrossesClover Mill Road
Coordinates40.01349, -75.65216

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length107.0 ft (32.6 m)
Max Span107.0 ft (32.6 m)
Deck Width44.9 ft (13.7 m)
Deck Area446.6 sq m
Main Spans1
Year Built1995

Traffic

Avg Daily Traffic29,961 (2023)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000009989

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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