US Bridges

Ill. 26 over Snag Creek Overflow

Fair

Marshall County, Illinois · .25 MI N County Line · Structure no. 062200700000000

Built
1991
34 years old
Condition
Fair
inspected January 2023
Type
Culvert
Concrete Continuous
Length
35 ft
3 main spans
Daily traffic
2,350
2023 count
Owner
State
State Highway Agency

About this bridge

Ill. 26 over Snag Creek Overflow is a concrete continuous culvert carrying Ill. 26 over Snag Creek Overflow in Marshall County, Illinois. It was built in 1991, so it is 34 years old, younger 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 5 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 2,350 vehicles a day, roughly 11% of them trucks, projected to reach 1,667 by 2046. The structure is 35 ft (10.8 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIll. 26
CrossesSnag Creek Overflow
Location.25 MI N County Line
RouteState Highway 26
CountyMarshall County
StateIllinois
Coordinates40.92402, -89.42807
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2023
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.6 US tons
Inventory rating38.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length35 ft (10.8 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,350 (2023)
Projected traffic1,667 by 2046
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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. 26 over Snag Creek Overflow built?

It was built in 1991, making it 34 years old in 2025.

What condition is Ill. 26 over Snag Creek Overflow 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 January 2023.

How much traffic does Ill. 26 over Snag Creek Overflow carry?

About 2,350 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Ill. 26 over Snag Creek Overflow?

The structure is 35 ft (10.8 m) long with a longest span of 11 ft (3.4 m).

Who owns Ill. 26 over Snag Creek Overflow?

It is owned by the State Highway Agency.