US Bridges

Ch 23 over Plow Hollow Creek

Good

Bureau County, Illinois · 1 MI E of Tiskilwa · Structure no. 006300800000000

Built
1998
27 years old
Condition
Good
inspected March 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
97 ft
2 main spans
Daily traffic
375
2020 count
Owner
County
County Highway Agency

About this bridge

Ch 23 over Plow Hollow Creek is a prestressed concrete box beam or girders - multiple carrying Ch 23 over Plow Hollow Creek in Bureau County, Illinois. It was built in 1998, so it is 27 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 375 vehicles a day, roughly 10% of them trucks, projected to reach 379 by 2046. The structure is 97 ft (29.6 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCh 23
CrossesPlow Hollow Creek
Location1 MI E of Tiskilwa
RouteCounty Highway 0
Coordinates41.28904, -89.48517
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMarch 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length97 ft (29.6 m)
Longest span68 ft (20.6 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2020)
Projected traffic379 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Ch 23 over Plow Hollow Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Ch 23 over Plow Hollow Creek 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 March 2021.

How much traffic does Ch 23 over Plow Hollow Creek carry?

About 375 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Ch 23 over Plow Hollow Creek?

The structure is 97 ft (29.6 m) long with a longest span of 68 ft (20.6 m) and a deck 30 ft wide.

Who owns Ch 23 over Plow Hollow Creek?

It is owned by the County Highway Agency.