US Bridges

W. Koeller Road over East Plum River

Poor

Stephenson County, Illinois · 4 Mi. Sw. Pearl City · Structure no. 089326200000000

Built
1992
33 years old
Condition
Poor
inspected December 2023
Type
Slab
Wood or Timber
Length
120 ft
5 main spans
Daily traffic
50
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

W. Koeller Road over East Plum River is a wood or timber slab carrying W. Koeller Road over East Plum River in Stephenson County, Illinois. It was built in 1992, so it is 33 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 50 vehicles a day, projected to reach 51 by 2046. The structure is 120 ft (36.6 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesW. Koeller Road
CrossesEast Plum River
Location4 Mi. Sw. Pearl City
RouteCounty Highway 0
CountyStephenson County
StateIllinois
Coordinates42.23459, -89.90673
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating51.8 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans5
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span32 ft (9.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2020)
Projected traffic51 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 W. Koeller Road over East Plum River built?

It was built in 1992, making it 33 years old in 2025.

What condition is W. Koeller Road over East Plum River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.

How much traffic does W. Koeller Road over East Plum River carry?

About 50 vehicles per day (2020 count).

How long is W. Koeller Road over East Plum River?

The structure is 120 ft (36.6 m) long with a longest span of 32 ft (9.8 m) and a deck 26 ft wide.

Who owns W. Koeller Road over East Plum River?

It is owned by the Town or Township Highway Agency.