US Bridges

Adeline RD over Leaf River

Fair

Ogle County, Illinois · North Edge Adeline · Structure no. 071300300000000

Built
1958
67 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
76 ft
1 main span
Daily traffic
450
2022 count
Owner
County
County Highway Agency

About this bridge

Adeline RD over Leaf River is a steel stringer/multi-beam or girder carrying Adeline RD over Leaf River in Ogle County, Illinois. It was built in 1958, so it is 67 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 450 vehicles a day, roughly 9% of them trucks, projected to reach 650 by 2046. The structure is 76 ft (23.2 m) long and 30 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

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CarriesAdeline RD
CrossesLeaf River
LocationNorth Edge Adeline
RouteCounty Highway 0
CountyOgle County
StateIllinois
Coordinates42.14478, -89.49032
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating33.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length76 ft (23.2 m)
Longest span72 ft (21.9 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2022)
Projected traffic650 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Adeline RD over Leaf River built?

It was built in 1958, making it 67 years old in 2025.

What condition is Adeline RD over Leaf 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 September 2023.

How much traffic does Adeline RD over Leaf River carry?

About 450 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Adeline RD over Leaf River?

The structure is 76 ft (23.2 m) long with a longest span of 72 ft (21.9 m) and a deck 30 ft wide.

Who owns Adeline RD over Leaf River?

It is owned by the County Highway Agency.