US Bridges

County Highway over Ainsworth Irrig Canal

FairPosted for load

Brown County, Nebraska · 1N 3W of Ainsworth · Structure no. C000912905

Built
1963
62 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
44 ft
2 main spans
Daily traffic
15
2003 count
Owner
County
County Highway Agency

About this bridge

County Highway over Ainsworth Irrig Canal is a wood or timber stringer/multi-beam or girder carrying County Highway over Ainsworth Irrig Canal in Brown County, Nebraska. It was built in 1963, 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 15 vehicles a day, roughly 20% of them trucks, projected to reach 25 by 2033. The structure is 44 ft (13.4 m) long and 26 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

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CarriesCounty Highway
CrossesAinsworth Irrig Canal
Location1N 3W of Ainsworth
RouteCounty Highway 29
CountyBrown County
StateNebraska
Coordinates42.5639, -99.9305
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating16.5 US tons
Inventory rating11 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length44 ft (13.4 m)
Longest span21 ft (6.4 m)
Deck width26 ft (7.8 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2003)
Projected traffic25 by 2033
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Highway over Ainsworth Irrig Canal built?

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

What condition is County Highway over Ainsworth Irrig Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does County Highway over Ainsworth Irrig Canal carry?

About 15 vehicles per day (2003 count), of which roughly 20% are trucks.

How long is County Highway over Ainsworth Irrig Canal?

The structure is 44 ft (13.4 m) long with a longest span of 21 ft (6.4 m) and a deck 26 ft wide.

Who owns County Highway over Ainsworth Irrig Canal?

It is owned by the County Highway Agency.