US Bridges

CH11 Pump Factory over Three Mile Branch

Poor

Lee County, Illinois · 2.2 MI S of Dixon · Structure no. 052359000000000

Built
1960
65 years old
Condition
Poor
inspected February 2025
Type
Slab
Concrete
Length
99 ft
3 main spans
Daily traffic
250
2022 count
Owner
County
County Highway Agency

About this bridge

CH11 Pump Factory over Three Mile Branch is a concrete slab carrying CH11 Pump Factory over Three Mile Branch in Lee County, Illinois. It was built in 1960, so it is 65 years old, older 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 250 vehicles a day, roughly 14% of them trucks, projected to reach 404 by 2046. The structure is 99 ft (30.2 m) long and 29 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesCH11 Pump Factory
CrossesThree Mile Branch
Location2.2 MI S of Dixon
RouteCounty Highway 0
CountyLee County
StateIllinois
Coordinates41.79767, -89.4968
Functional classRural Minor Collector

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating32.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length99 ft (30.2 m)
Longest span28 ft (8.5 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2022)
Projected traffic404 by 2046
Trucks14%
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

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 CH11 Pump Factory over Three Mile Branch built?

It was built in 1960, making it 65 years old in 2025.

What condition is CH11 Pump Factory over Three Mile Branch 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 February 2025.

How much traffic does CH11 Pump Factory over Three Mile Branch carry?

About 250 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is CH11 Pump Factory over Three Mile Branch?

The structure is 99 ft (30.2 m) long with a longest span of 28 ft (8.5 m) and a deck 29 ft wide.

Who owns CH11 Pump Factory over Three Mile Branch?

It is owned by the County Highway Agency.