US Bridges

Il 26/29 over Hennepin Canal

Good

Bureau County, Illinois · S Edge Bureau Jct. · Structure no. 006014800000000

Built
1988
37 years old
Condition
Good
inspected January 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
168 ft
3 main spans
Daily traffic
750
2023 count
Owner
State
State Highway Agency

About this bridge

Il 26/29 over Hennepin Canal is a prestressed concrete stringer/multi-beam or girder carrying Il 26/29 over Hennepin Canal in Bureau County, Illinois. It was built in 1988, so it is 37 years old, younger than the Illinois average of 45.3 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 750 vehicles a day, roughly 15% of them trucks, projected to reach 1,263 by 2046. The structure is 168 ft (51.2 m) long and 35 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesIl 26/29
CrossesHennepin Canal
LocationS Edge Bureau Jct.
RouteState Highway 26
Coordinates41.28717, -89.37458
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.9 US tons
Inventory rating52.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length168 ft (51.2 m)
Longest span69 ft (21 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2023)
Projected traffic1,263 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Il 26/29 over Hennepin Canal built?

It was built in 1988, making it 37 years old in 2025.

What condition is Il 26/29 over Hennepin 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 January 2021.

How much traffic does Il 26/29 over Hennepin Canal carry?

About 750 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is Il 26/29 over Hennepin Canal?

The structure is 168 ft (51.2 m) long with a longest span of 69 ft (21 m) and a deck 35 ft wide.

Who owns Il 26/29 over Hennepin Canal?

It is owned by the State Highway Agency.