US Bridges

Woosung RD over Sevenmile Branch

Fair

Ogle County, Illinois · 4.0 MI NW Dixon · Structure no. 071334000000000

Built
2010
15 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
46 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

Woosung RD over Sevenmile Branch is a prestressed concrete box beam or girders - multiple carrying Woosung RD over Sevenmile Branch in Ogle County, Illinois. It was built in 2010, so it is 15 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 156 by 2046. The structure is 46 ft (13.9 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesWoosung RD
CrossesSevenmile Branch
Location4.0 MI NW Dixon
RouteCounty Highway 0
CountyOgle County
StateIllinois
Coordinates41.91374, -89.52759
Functional classRural Minor 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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 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 geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating54.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length46 ft (13.9 m)
Longest span42 ft (12.8 m)
Deck width36 ft (11 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic156 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Woosung RD over Sevenmile Branch built?

It was built in 2010, making it 15 years old in 2025.

What condition is Woosung RD over Sevenmile Branch 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 August 2023.

How much traffic does Woosung RD over Sevenmile Branch carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Woosung RD over Sevenmile Branch?

The structure is 46 ft (13.9 m) long with a longest span of 42 ft (12.8 m) and a deck 36 ft wide.

Who owns Woosung RD over Sevenmile Branch?

It is owned by the County Highway Agency.