US Bridges

Ill 49 over Shavetail Creek

PoorPosted for load

Iroquois County, Illinois · 4.83 MI S of US 24 · Structure no. 038009300000000

Built
1927
98 years old, rebuilt 2006
Condition
Poor
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
1,000
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 49 over Shavetail Creek is a prestressed concrete box beam or girders - multiple carrying Ill 49 over Shavetail Creek in Iroquois County, Illinois. It was built in 1927 and reconstructed in 2006, so it is 98 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 4 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. Its operating status is: posted for load restriction.

It carries about 1,000 vehicles a day, roughly 21% of them trucks, projected to reach 1,162 by 2046. The structure is 55 ft (16.7 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesIll 49
CrossesShavetail Creek
Location4.83 MI S of US 24
RouteState Highway 49
Coordinates40.69993, -87.86004
Functional classRural Minor Arterial

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating29.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadHS 20
Structure length55 ft (16.7 m)
Longest span55 ft (16.7 m)
Deck width33 ft (10.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,162 by 2046
Trucks21%
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

OwnerState Highway Agency
Maintained byState 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 Ill 49 over Shavetail Creek built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 2006.

What condition is Ill 49 over Shavetail Creek 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 March 2024.

How much traffic does Ill 49 over Shavetail Creek carry?

About 1,000 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is Ill 49 over Shavetail Creek?

The structure is 55 ft (16.7 m) long with a longest span of 55 ft (16.7 m) and a deck 33 ft wide.

Who owns Ill 49 over Shavetail Creek?

It is owned by the State Highway Agency.