US Bridges

County Highway over Ainsworth Irrig Canal

Fair

Brown County, Nebraska · 1.4W .7S Johnstown · Structure no. C000901305

Built
2001
24 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
34 ft
1 main span
Daily traffic
75
2003 count
Owner
County
County Highway Agency

About this bridge

County Highway over Ainsworth Irrig Canal is a concrete stringer/multi-beam or girder carrying County Highway over Ainsworth Irrig Canal in Brown County, Nebraska. It was built in 2001, so it is 24 years old, younger 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.

It carries about 75 vehicles a day, projected to reach 127 by 2033. The structure is 34 ft (10.4 m) long and 26 ft wide. If it were closed, the detour would be 118.1 mi (190 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesAinsworth Irrig Canal
Location1.4W .7S Johnstown
RouteCounty Highway 13
CountyBrown County
StateNebraska
Coordinates42.56, -100.0867
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating59.5 US tons
Inventory rating35.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span33 ft (10.1 m)
Deck width26 ft (7.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2003)
Projected traffic127 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed118.1 mi (190 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Ainsworth Irrig Canal built?

It was built in 2001, making it 24 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 2023.

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

About 75 vehicles per day (2003 count).

How long is County Highway over Ainsworth Irrig Canal?

The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 26 ft wide.

Who owns County Highway over Ainsworth Irrig Canal?

It is owned by the County Highway Agency.