US Bridges

Spring Valley RD over Little Rock Creek

Poor

Whiteside County, Illinois · 6 MI North Morrison · Structure no. 098302100000000

Built
1938
87 years old, rebuilt 1987
Condition
Poor
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
103 ft
3 main spans
Daily traffic
100
2021 count
Owner
County
County Highway Agency

About this bridge

Spring Valley RD over Little Rock Creek is a prestressed concrete box beam or girders - multiple carrying Spring Valley RD over Little Rock Creek in Whiteside County, Illinois. It was built in 1938 and reconstructed in 1987, so it is 87 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 100 vehicles a day, roughly 14% of them trucks, projected to reach 101 by 2046. The structure is 103 ft (31.4 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesSpring Valley RD
CrossesLittle Rock Creek
Location6 MI North Morrison
RouteCounty Highway 0
Coordinates41.89505, -89.9371
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating31.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span38 ft (11.5 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2021)
Projected traffic101 by 2046
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Spring Valley RD over Little Rock Creek built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1987.

What condition is Spring Valley RD over Little Rock Creek 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 March 2023.

How much traffic does Spring Valley RD over Little Rock Creek carry?

About 100 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is Spring Valley RD over Little Rock Creek?

The structure is 103 ft (31.4 m) long with a longest span of 38 ft (11.5 m) and a deck 28 ft wide.

Who owns Spring Valley RD over Little Rock Creek?

It is owned by the County Highway Agency.