US Bridges

River RD over Unnamed Creek

Good

Ogle County, Illinois · 3.5 MI SW Byron · Structure no. 071500300000000

Built
1956
69 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
2,100
2022 count
Owner
County
County Highway Agency

About this bridge

River RD over Unnamed Creek is a concrete culvert carrying River RD over Unnamed Creek in Ogle County, Illinois. It was built in 1956, so it is 69 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,100 vehicles a day, roughly 5% of them trucks, projected to reach 1,924 by 2046. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 21.7 mi (35 km).

CarriesRiver RD
CrossesUnnamed Creek
Location3.5 MI SW Byron
RouteCounty Highway 0
Coordinates42.09776, -89.31075
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating51 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 15
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2022)
Projected traffic1,924 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 River RD over Unnamed Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is River RD over Unnamed Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does River RD over Unnamed Creek carry?

About 2,100 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is River RD over Unnamed Creek?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns River RD over Unnamed Creek?

It is owned by the County Highway Agency.