US Bridges

Montague RD over Rock Creek

Fair

Winnebago County, Illinois · 0.2 M W Meridian RD · Structure no. 101510000000000

Built
1981
44 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
41 ft
3 main spans
Daily traffic
3,300
2022 count
Owner
County
County Highway Agency

About this bridge

Montague RD over Rock Creek is a concrete culvert carrying Montague RD over Rock Creek in Winnebago County, Illinois. It was built in 1981, so it is 44 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 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 3,300 vehicles a day, roughly 7% of them trucks, projected to reach 3,636 by 2046. The structure is 41 ft (12.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMontague RD
CrossesRock Creek
Location0.2 M W Meridian RD
RouteCounty Highway 0
CountyWinnebago County
StateIllinois
Coordinates42.2286, -89.1758
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.8 US tons
Inventory rating42.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length41 ft (12.6 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 traffic3,300 (2022)
Projected traffic3,636 by 2046
Trucks7%
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

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 Montague RD over Rock Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Montague RD over Rock 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 March 2023.

How much traffic does Montague RD over Rock Creek carry?

About 3,300 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Montague RD over Rock Creek?

The structure is 41 ft (12.6 m) long with a longest span of 14 ft (4.3 m).

Who owns Montague RD over Rock Creek?

It is owned by the County Highway Agency.