US Bridges

South Willow Road over Muddy Plum River

Good

Jo Daviess County, Illinois · 5 MI SE Stockton · Structure no. 043327100000000

Built
2008
17 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
43 ft
2 main spans
Daily traffic
125
2021 count
Owner
County
County Highway Agency

About this bridge

South Willow Road over Muddy Plum River is a concrete culvert carrying South Willow Road over Muddy Plum River in Jo Daviess County, Illinois. It was built in 2008, so it is 17 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 125 vehicles a day, roughly 46% of them trucks, projected to reach 126 by 2046. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 23 mi (37 km).

CarriesSouth Willow Road
CrossesMuddy Plum River
Location5 MI SE Stockton
RouteCounty Highway 0
Coordinates42.28698, -89.94028
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.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length43 ft (13.1 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 traffic125 (2021)
Projected traffic126 by 2046
Trucks46%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 South Willow Road over Muddy Plum River built?

It was built in 2008, making it 17 years old in 2025.

What condition is South Willow Road over Muddy Plum River 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 October 2024.

How much traffic does South Willow Road over Muddy Plum River carry?

About 125 vehicles per day (2021 count), of which roughly 46% are trucks.

How long is South Willow Road over Muddy Plum River?

The structure is 43 ft (13.1 m) long with a longest span of 12 ft (3.7 m).

Who owns South Willow Road over Muddy Plum River?

It is owned by the County Highway Agency.