US Bridges

Montgomery Road over Waubonsie Creek

Fair

Kane County, Illinois · 0.3 MI NW US RTE 34 · Structure no. 045601500000000

Built
1977
48 years old, rebuilt 2021
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
10,450
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Montgomery Road over Waubonsie Creek is a prestressed concrete box beam or girders - multiple carrying Montgomery Road over Waubonsie Creek in Kane County, Illinois. It was built in 1977 and reconstructed in 2021, so it is 48 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 10,450 vehicles a day, roughly 5% of them trucks, projected to reach 11,651 by 2046. The structure is 41 ft (12.5 m) long and 71 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMontgomery Road
CrossesWaubonsie Creek
Location0.3 MI NW US RTE 34
RouteCity Street 0
CountyKane County
StateIllinois
Coordinates41.7354, -88.26308
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length41 ft (12.5 m)
Longest span39 ft (12 m)
Deck width71 ft (21.7 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,450 (2023)
Projected traffic11,651 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 Montgomery Road over Waubonsie Creek built?

It was built in 1977, making it 48 years old in 2025. It was reconstructed in 2021.

What condition is Montgomery Road over Waubonsie 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 October 2023.

How much traffic does Montgomery Road over Waubonsie Creek carry?

About 10,450 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Montgomery Road over Waubonsie Creek?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (12 m) and a deck 71 ft wide.

Who owns Montgomery Road over Waubonsie Creek?

It is owned by the City or Municipal Highway Agency.