US Bridges

Rend Lake Dam Road over Rend Lake Spillway

Good

Franklin County, Illinois · Rend Lake · Structure no. CEPLMSIL-000003

Built
1971
54 years old
Condition
Good
inspected May 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
605 ft
6 main spans
Daily traffic
2,180
2020 count
Owner
Federal
Corps of Engineers (Civil)

About this bridge

Rend Lake Dam Road over Rend Lake Spillway is a steel continuous stringer/multi-beam or girder carrying Rend Lake Dam Road over Rend Lake Spillway in Franklin County, Illinois. It was built in 1971, so it is 54 years old, older 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 2,180 vehicles a day, roughly 5% of them trucks, projected to reach 2,000 by 2040. The structure is 605 ft (184.4 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesRend Lake Dam Road
CrossesRend Lake Spillway
LocationRend Lake
CountyFranklin County
StateIllinois
Coordinates38.03783, -88.95642
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating33.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length605 ft (184.4 m)
Longest span100 ft (30.5 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,180 (2020)
Projected traffic2,000 by 2040
Trucks5%
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

OwnerCorps of Engineers (Civil)
Maintained byCorps of Engineers (Civil)
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost$52,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rend Lake Dam Road over Rend Lake Spillway built?

It was built in 1971, making it 54 years old in 2025.

What condition is Rend Lake Dam Road over Rend Lake Spillway 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 May 2022.

How much traffic does Rend Lake Dam Road over Rend Lake Spillway carry?

About 2,180 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Rend Lake Dam Road over Rend Lake Spillway?

The structure is 605 ft (184.4 m) long with a longest span of 100 ft (30.5 m) and a deck 30 ft wide.

Who owns Rend Lake Dam Road over Rend Lake Spillway?

It is owned by the Corps of Engineers (Civil).