US Bridges

Ill 149 over Big Muddy River

Good

Franklin County, Illinois · 1.6 MI E Zeigler · Structure no. 028003700000000

Built
1928
97 years old, rebuilt 1988
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
453 ft
6 main spans
Daily traffic
2,250
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 149 over Big Muddy River is a steel continuous stringer/multi-beam or girder carrying Ill 149 over Big Muddy River in Franklin County, Illinois. It was built in 1928 and reconstructed in 1988, so it is 97 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 2,250 vehicles a day, roughly 6% of them trucks, projected to reach 2,626 by 2046. The structure is 453 ft (138 m) long and 35 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesIll 149
CrossesBig Muddy River
Location1.6 MI E Zeigler
RouteState Highway 149
Coordinates37.89155, -89.0211
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating31.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length453 ft (138 m)
Longest span86 ft (26.2 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,250 (2023)
Projected traffic2,626 by 2046
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemYes

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 149 over Big Muddy River built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1988.

What condition is Ill 149 over Big Muddy River 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 January 2025.

How much traffic does Ill 149 over Big Muddy River carry?

About 2,250 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Ill 149 over Big Muddy River?

The structure is 453 ft (138 m) long with a longest span of 86 ft (26.2 m) and a deck 35 ft wide.

Who owns Ill 149 over Big Muddy River?

It is owned by the State Highway Agency.