US Bridges

N29 over Tri-State Canal

Good

Scotts Bluff County, Nebraska · 2N Mitchell · Structure no. S029 01513

Built
1996
29 years old
Condition
Good
inspected May 2022
Type
Culvert
Concrete
Length
52 ft
4 main spans
Daily traffic
610
2018 count
Owner
State
State Highway Agency

About this bridge

N29 over Tri-State Canal is a concrete culvert carrying N29 over Tri-State Canal in Scotts Bluff County, Nebraska. It was built in 1996, so it is 29 years old, younger 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 610 vehicles a day, roughly 7% of them trucks, projected to reach 793 by 2038. The structure is 52 ft (15.8 m) long. If it were closed, the detour would be 62.1 mi (100 km).

CarriesN29
CrossesTri-State Canal
Location2N Mitchell
RouteState Highway 29
Coordinates41.9772, -103.8141
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 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.4 US tons
Inventory rating36.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadUnknown
Structure length52 ft (15.8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic610 (2018)
Projected traffic793 by 2038
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 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 Tri-State Canal built?

It was built in 1996, making it 29 years old in 2025.

What condition is N29 over Tri-State Canal 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 2022.

How much traffic does N29 over Tri-State Canal carry?

About 610 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is N29 over Tri-State Canal?

The structure is 52 ft (15.8 m) long with a longest span of 12 ft (3.7 m).

Who owns N29 over Tri-State Canal?

It is owned by the State Highway Agency.