Structure 28912 · Northampton County, PA

Glendon Hill Road over Lehigh River

Carries Glendon Hill Road over Lehigh River, Hugh Moore Park - Canal.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT357 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 5/9

357 ft end to end, longest span 119 ft: about 5 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 through truss.

Built1905rebuilt 2012
Length357.0 ft108.8 m
Daily traffic100counted 2010
Last inspectedSeptember 2023every 24 months

Location

StatePennsylvania
CountyNorthampton
LocationHugh Moore Park - Canal
CarriesGlendon Hill Road
CrossesLehigh River
Coordinates40.66990, -75.23700

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length357.0 ft (108.8 m)
Max Span119.1 ft (36.3 m)
Deck Width17.1 ft (5.2 m)
Deck Area565.8 sq m
Main Spans3
Year Built1905 (reconstructed 2012)

Traffic

Avg Daily Traffic100 (2010)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number000000000028912

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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