US Bridges

US 30 FAP 573 over Little Rock Creek

Fair

DeKalb County, Illinois · .5 MI W Hinckley · Structure no. 019003600000000

Built
1987
38 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
137 ft
2 main spans
Daily traffic
3,150
2023 count
Owner
State
State Highway Agency

About this bridge

US 30 FAP 573 over Little Rock Creek is a steel continuous stringer/multi-beam or girder carrying US 30 FAP 573 over Little Rock Creek in DeKalb County, Illinois. It was built in 1987, so it is 38 years old, younger 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 3,150 vehicles a day, roughly 16% of them trucks, projected to reach 3,920 by 2046. The structure is 137 ft (41.8 m) long and 43 ft wide. If it were closed, the detour would be 32.9 mi (53 km).

CarriesUS 30 FAP 573
CrossesLittle Rock Creek
Location.5 MI W Hinckley
RouteU.S. Route 30
Coordinates41.7686, -88.65729
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating40.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length137 ft (41.8 m)
Longest span65 ft (19.8 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,150 (2023)
Projected traffic3,920 by 2046
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed32.9 mi (53 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 30 FAP 573 over Little Rock Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is US 30 FAP 573 over Little 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 March 2023.

How much traffic does US 30 FAP 573 over Little Rock Creek carry?

About 3,150 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is US 30 FAP 573 over Little Rock Creek?

The structure is 137 ft (41.8 m) long with a longest span of 65 ft (19.8 m) and a deck 43 ft wide.

Who owns US 30 FAP 573 over Little Rock Creek?

It is owned by the State Highway Agency.