US Bridges

Adeline RD over S. Br. Leaf River

Fair

Ogle County, Illinois · S. Edge of Adeline · Structure no. 071331900000000

Built
1998
27 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
425
2022 count
Owner
County
County Highway Agency

About this bridge

Adeline RD over S. Br. Leaf River is a prestressed concrete box beam or girders - multiple carrying Adeline RD over S. Br. Leaf River in Ogle County, Illinois. It was built in 1998, so it is 27 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 5 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 425 vehicles a day, roughly 6% of them trucks, projected to reach 754 by 2046. The structure is 46 ft (14.1 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesAdeline RD
CrossesS. Br. Leaf River
LocationS. Edge of Adeline
RouteCounty Highway 0
CountyOgle County
StateIllinois
Coordinates42.1328, -89.49091
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating32.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length46 ft (14.1 m)
Longest span45 ft (13.7 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2022)
Projected traffic754 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 S. Br. Leaf River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Adeline RD over S. Br. 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 S. Br. Leaf River carry?

About 425 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Adeline RD over S. Br. Leaf River?

The structure is 46 ft (14.1 m) long with a longest span of 45 ft (13.7 m) and a deck 30 ft wide.

Who owns Adeline RD over S. Br. Leaf River?

It is owned by the County Highway Agency.