US Bridges

Glidden RD over So Br Kishwaukee Rv

Fair

DeKalb County, Illinois · 3250N 850E · Structure no. 019410100000000

Built
1947
78 years old, rebuilt 1987
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
210 ft
3 main spans
Daily traffic
3,050
2021 count
Owner
County
County Highway Agency

About this bridge

Glidden RD over So Br Kishwaukee Rv is a steel continuous stringer/multi-beam or girder carrying Glidden RD over So Br Kishwaukee Rv in DeKalb County, Illinois. It was built in 1947 and reconstructed in 1987, so it is 78 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 3,050 vehicles a day, roughly 11% of them trucks, projected to reach 3,416 by 2046. The structure is 210 ft (63.9 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesGlidden RD
CrossesSo Br Kishwaukee Rv
Location3250N 850E
RouteCounty Highway 0
CountyDeKalb County
StateIllinois
Coordinates42.10421, -88.78342
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.8 US tons
Inventory rating22.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length210 ft (63.9 m)
Longest span79 ft (24.2 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,050 (2021)
Projected traffic3,416 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Glidden RD over So Br Kishwaukee Rv built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1987.

What condition is Glidden RD over So Br Kishwaukee Rv 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 2024.

How much traffic does Glidden RD over So Br Kishwaukee Rv carry?

About 3,050 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is Glidden RD over So Br Kishwaukee Rv?

The structure is 210 ft (63.9 m) long with a longest span of 79 ft (24.2 m) and a deck 30 ft wide.

Who owns Glidden RD over So Br Kishwaukee Rv?

It is owned by the County Highway Agency.