Structure 13390 · Crawford County, PA

T-743 Hamilton Rd. over Over Muddy Creek

Carries T-743 Hamilton Rd. over Over Muddy Creek, .5 Mi SE Sr0077athens Twp.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 1 of 9.

How ratings work
Deck5/9 · Fair
Superstructuresets the rating1/9 · Imminent Failure
Substructure4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT47 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 1/9 · sets the ratingSubstructure 4/9

47 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 through truss.

Built1920rebuilt 1997
Length46.9 ft14.3 m
Daily traffic250counted 2014
Last inspectedOctober 2023every 24 months

Location

StatePennsylvania
CountyCrawford
Location.5 Mi SE Sr0077athens Twp
CarriesT-743 Hamilton Rd.
CrossesOver Muddy Creek
Coordinates41.73714, -79.88199

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length46.9 ft (14.3 m)
Max Span42.0 ft (12.8 m)
Deck Width14.8 ft (4.5 m)
Deck Area64.3 sq m
Main Spans1
Year Built1920 (reconstructed 1997)

Traffic

Avg Daily Traffic250 (2014)
Lanes On Bridge1

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number000000000013390

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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