Structure 24742 · Lycoming County, PA

SR 405 over Over Trib To Susquehanna

Carries SR 405 over Over Trib To Susquehanna, 3 Mi SW Of Muncy Boro.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
23 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

23 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 tee-beam bridge.

Built1921rebuilt 1946
Length23.0 ft7 m
Daily traffic4,462counted 2023
Last inspectedMarch 2023every 24 months

Location

StatePennsylvania
CountyLycoming
Location3 Mi SW Of Muncy Boro
CarriesSR 405
CrossesOver Trib To Susquehanna
Coordinates41.18412, -76.84590

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length23.0 ft (7 m)
Max Span22.0 ft (6.7 m)
Deck Width42.0 ft (12.8 m)
Deck Area89.6 sq m
Main Spans1
Year Built1921 (reconstructed 1946)

Traffic

Avg Daily Traffic4,462 (2023)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000024742

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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