Structure S136 24018 · Nemaha County, NE

Us136 over Missouri River

Carries Us136 over Missouri River, Ecl Brownville.

Overall conditionPoor

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

How ratings work
Deck7/9 · Good
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,904 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9Substructure 4/9 · sets the rating

1,904 ft end to end, longest span 420 ft: about 5.3 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.

Built1938rebuilt 2009
Length1903.9 ft580.3 m
Daily traffic2,450counted 2018
Last inspectedNovember 2024every 24 months

Location

StateNebraska
CountyNemaha
LocationEcl Brownville
CarriesUs136
CrossesMissouri River
Coordinates40.39900, -95.65200

Physical Characteristics

MaterialSteel Continuous
DesignTruss - Thru
Total Length1903.9 ft (580.3 m)
Max Span419.9 ft (128 m)
Deck Width25.6 ft (7.8 m)
Deck Area4526.3 sq m
Main Spans2
Year Built1938 (reconstructed 2009)

Traffic

Avg Daily Traffic2,450 (2018)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical3 — Scour critical
Structure NumberS136 24018

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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