US Bridges

Millstream Drive over Boone Creek

Fair

McHenry County, Illinois · .3 M N 120.3 M W 31 · Structure no. 056660200000000

Built
1965
60 years old
Condition
Fair
inspected May 2024
Type
Culvert
Steel
Length
32 ft
2 main spans
Daily traffic
2,550
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Millstream Drive over Boone Creek is a steel culvert carrying Millstream Drive over Boone Creek in McHenry County, Illinois. It was built in 1965, so it is 60 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 2,550 vehicles a day, roughly 3% of them trucks, projected to reach 2,940 by 2046. The structure is 32 ft (9.8 m) long.

Location

Open in Google Maps
CarriesMillstream Drive
CrossesBoone Creek
Location.3 M N 120.3 M W 31
CountyMcHenry County
StateIllinois
Coordinates42.34799, -88.27327
Functional classUrban 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2023)
Projected traffic2,940 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Millstream Drive over Boone Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Millstream Drive over Boone Creek 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 May 2024.

How much traffic does Millstream Drive over Boone Creek carry?

About 2,550 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Millstream Drive over Boone Creek?

The structure is 32 ft (9.8 m) long with a longest span of 14 ft (4.3 m).

Who owns Millstream Drive over Boone Creek?

It is owned by the City or Municipal Highway Agency.