Structure 24589 · Lycoming County, PA

SR 54 over W.b. Susquehanna River

Carries SR 54 over W.b. Susquehanna River, Montgomery River Bridge.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT964 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

964 ft end to end, longest span 80 ft: about 2.7 football fields. 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.

Built1938rebuilt 1998
Length963.9 ft293.8 m
Daily traffic3,254counted 2023
Last inspectedApril 2021every 48 months

Location

StatePennsylvania
CountyLycoming
LocationMontgomery River Bridge
CarriesSR 54
CrossesW.b. Susquehanna River
Coordinates41.16700, -76.87071

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length963.9 ft (293.8 m)
Max Span80.1 ft (24.4 m)
Deck Width29.2 ft (8.9 m)
Deck Area2614.8 sq m
Main Spans12
Year Built1938 (reconstructed 1998)

Traffic

Avg Daily Traffic3,254 (2023)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000024589

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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