US Bridges

Mt Glenn RD over Clear Creek Trib

Good

Union County, Illinois · 1.5MI West of Cobden · Structure no. 091322200000000

Built
2007
18 years old
Condition
Good
inspected March 2021
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
175
2020 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Mt Glenn RD over Clear Creek Trib is a prestressed concrete box beam or girders - multiple carrying Mt Glenn RD over Clear Creek Trib in Union County, Illinois. It was built in 2007, so it is 18 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 175 vehicles a day, roughly 1% of them trucks, projected to reach 177 by 2046. The structure is 51 ft (15.5 m) long and 27 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesMt Glenn RD
CrossesClear Creek Trib
Location1.5MI West of Cobden
RouteCounty Highway 0
Coordinates37.52786, -89.28678
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2021
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span50 ft (15.1 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2020)
Projected traffic177 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Mt Glenn RD over Clear Creek Trib built?

It was built in 2007, making it 18 years old in 2025.

What condition is Mt Glenn RD over Clear Creek Trib 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 March 2021.

How much traffic does Mt Glenn RD over Clear Creek Trib carry?

About 175 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Mt Glenn RD over Clear Creek Trib?

The structure is 51 ft (15.5 m) long with a longest span of 50 ft (15.1 m) and a deck 27 ft wide.

Who owns Mt Glenn RD over Clear Creek Trib?

It is owned by the Town or Township Highway Agency.