US Bridges

N29 over Stream

Good

Sioux County, Nebraska · 22S Agate · Structure no. S029 02486

Built
1963
62 years old, rebuilt 1996
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
240
2018 count
Owner
State
State Highway Agency

About this bridge

N29 over Stream is a concrete culvert carrying N29 over Stream in Sioux County, Nebraska. It was built in 1963 and reconstructed in 1996, so it is 62 years old, older than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 240 vehicles a day, roughly 8% of them trucks, projected to reach 324 by 2038. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 217.5 mi (350 km).

CarriesN29
CrossesStream
Location22S Agate
RouteState Highway 29
Coordinates42.1167, -103.8234
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2018)
Projected traffic324 by 2038
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed217.5 mi (350 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N29 over Stream built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1996.

What condition is N29 over Stream in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does N29 over Stream carry?

About 240 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is N29 over Stream?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns N29 over Stream?

It is owned by the State Highway Agency.