US Bridges

Minns Drive over Willow Creek

Good

Winnebago County, Illinois · .3 MI E. Alpine RD · Structure no. 101650100000000

Built
1990
35 years old
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
61 ft
1 main span
Daily traffic
750
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Minns Drive over Willow Creek is a prestressed concrete box beam or girders - multiple carrying Minns Drive over Willow Creek in Winnebago County, Illinois. It was built in 1990, so it is 35 years old, younger 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 750 vehicles a day, roughly 5% of them trucks, projected to reach 2,222 by 2046. The structure is 61 ft (18.6 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMinns Drive
CrossesWillow Creek
Location.3 MI E. Alpine RD
Coordinates42.35376, -89.02286
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60.7 US tons
Inventory rating36.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span58 ft (17.8 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2022)
Projected traffic2,222 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Minns Drive over Willow Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is Minns Drive over Willow 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 September 2024.

How much traffic does Minns Drive over Willow Creek carry?

About 750 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Minns Drive over Willow Creek?

The structure is 61 ft (18.6 m) long with a longest span of 58 ft (17.8 m) and a deck 33 ft wide.

Who owns Minns Drive over Willow Creek?

It is owned by the City or Municipal Highway Agency.