US Bridges

Hurd RD over Rock River

Fair

Whiteside County, Illinois · At Hillsdale · Structure no. 098301000000000

Built
1953
72 years old, rebuilt 1997
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,158 ft
11 main spans
Daily traffic
600
2021 count
Owner
County
County Highway Agency

About this bridge

Hurd RD over Rock River is a steel continuous stringer/multi-beam or girder carrying Hurd RD over Rock River in Whiteside County, Illinois. It was built in 1953 and reconstructed in 1997, so it is 72 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 600 vehicles a day, roughly 18% of them trucks, projected to reach 455 by 2046. The structure is 1,158 ft (353 m) long and 30 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesHurd RD
CrossesRock River
LocationAt Hillsdale
RouteCounty Highway 0
CountyWhiteside County
StateIllinois
Coordinates41.60244, -90.16717
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 protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.1 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length1,158 ft (353 m)
Longest span136 ft (41.5 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2021)
Projected traffic455 by 2046
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 Hurd RD over Rock River built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1997.

What condition is Hurd RD over Rock River 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 November 2023.

How much traffic does Hurd RD over Rock River carry?

About 600 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is Hurd RD over Rock River?

The structure is 1,158 ft (353 m) long with a longest span of 136 ft (41.5 m) and a deck 30 ft wide.

Who owns Hurd RD over Rock River?

It is owned by the County Highway Agency.