US Bridges

Ch 39 over S. Edwards River

Poor

Henry County, Illinois · Bishop Hill · Structure no. 037301000000000

Built
1969
56 years old
Condition
Poor
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
101 ft
3 main spans
Daily traffic
650
2020 count
Owner
County
County Highway Agency

About this bridge

Ch 39 over S. Edwards River is a prestressed concrete box beam or girders - multiple carrying Ch 39 over S. Edwards River in Henry County, Illinois. It was built in 1969, so it is 56 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 650 vehicles a day, roughly 15% of them trucks, projected to reach 702 by 2046. The structure is 101 ft (30.8 m) long and 36 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesCh 39
CrossesS. Edwards River
LocationBishop Hill
RouteCounty Highway 0
Coordinates41.20535, -90.11803
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating23.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 15
Structure length101 ft (30.8 m)
Longest span50 ft (15.2 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2020)
Projected traffic702 by 2046
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 Ch 39 over S. Edwards River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Ch 39 over S. Edwards River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Ch 39 over S. Edwards River carry?

About 650 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Ch 39 over S. Edwards River?

The structure is 101 ft (30.8 m) long with a longest span of 50 ft (15.2 m) and a deck 36 ft wide.

Who owns Ch 39 over S. Edwards River?

It is owned by the County Highway Agency.