US Bridges

N31 over Park/Papio/Up 816-853-S

Poor

Douglas County, Nebraska · In Elkhorn · Structure no. S031 02440

Built
1938
87 years old, rebuilt 1977
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
515 ft
10 main spans
Daily traffic
11,100
2018 count
Owner
State
State Highway Agency

About this bridge

N31 over Park/Papio/Up 816-853-S is a steel stringer/multi-beam or girder carrying N31 over Park/Papio/Up 816-853-S in Douglas County, Nebraska. It was built in 1938 and reconstructed in 1977, so it is 87 years old, older than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 11,100 vehicles a day, roughly 4% of them trucks, projected to reach 18,315 by 2038. The structure is 515 ft (157 m) long and 52 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesN31
CrossesPark/Papio/Up 816-853-S
LocationIn Elkhorn
RouteState Highway 31
Coordinates41.2812, -96.2345
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.5 US tons
Inventory rating28.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length515 ft (157 m)
Longest span76 ft (23.2 m)
Deck width52 ft (15.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,100 (2018)
Projected traffic18,315 by 2038
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway, waterway and railroad
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N31 over Park/Papio/Up 816-853-S built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1977.

What condition is N31 over Park/Papio/Up 816-853-S in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does N31 over Park/Papio/Up 816-853-S carry?

About 11,100 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is N31 over Park/Papio/Up 816-853-S?

The structure is 515 ft (157 m) long with a longest span of 76 ft (23.2 m) and a deck 52 ft wide.

Who owns N31 over Park/Papio/Up 816-853-S?

It is owned by the State Highway Agency.