Structure S034 38208 · Cass County, NE

Old Us34 over Missouri River

Carries Old Us34 over Missouri River, 2e Plattsmouth.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 3 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure4/9 · Poor
Substructuresets the rating3/9 · Serious
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,413 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9Substructure 3/9 · sets the rating

1,413 ft end to end, longest span 402 ft: about 3.9 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 through truss.

Built1929rebuilt 2008
Length1413.1 ft430.7 m
Daily traffic1,385counted 2012
Last inspectedOctober 2023every 24 months

Location

StateNebraska
CountyCass
Location2e Plattsmouth
CarriesOld Us34
CrossesMissouri River
Coordinates41.00100, -95.86690

Physical Characteristics

MaterialSteel Continuous
DesignTruss - Thru
Total Length1413.1 ft (430.7 m)
Max Span401.9 ft (122.5 m)
Deck Width22.0 ft (6.7 m)
Deck Area2885.7 sq m
Main Spans3
Year Built1929 (reconstructed 2008)

Traffic

Avg Daily Traffic1,385 (2012)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerOther Local Agencies
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical5 — Stable for scour
Structure NumberS034 38208

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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