US Bridges

Pilgrim RD over Rock Creek

Fair

Whiteside County, Illinois · 3.5 MI W of Coleta · Structure no. 098304500000000

Built
1972
53 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
174 ft
3 main spans
Daily traffic
525
2021 count
Owner
County
County Highway Agency

About this bridge

Pilgrim RD over Rock Creek is a steel continuous stringer/multi-beam or girder carrying Pilgrim RD over Rock Creek in Whiteside County, Illinois. It was built in 1972, so it is 53 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 525 vehicles a day, roughly 21% of them trucks, projected to reach 530 by 2046. The structure is 174 ft (53 m) long and 29 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesPilgrim RD
CrossesRock Creek
Location3.5 MI W of Coleta
RouteCounty Highway 0
CountyWhiteside County
StateIllinois
Coordinates41.90562, -89.87016
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
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 rating56.1 US tons
Inventory rating33.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length174 ft (53 m)
Longest span63 ft (19.2 m)
Deck width29 ft (8.7 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic525 (2021)
Projected traffic530 by 2046
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Pilgrim RD over Rock Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Pilgrim RD over Rock Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does Pilgrim RD over Rock Creek carry?

About 525 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is Pilgrim RD over Rock Creek?

The structure is 174 ft (53 m) long with a longest span of 63 ft (19.2 m) and a deck 29 ft wide.

Who owns Pilgrim RD over Rock Creek?

It is owned by the County Highway Agency.