US Bridges

Ill 149 over Tilley Creek

Fair

Franklin County, Illinois · 3.4 MI W Ill 34 · Structure no. 028004000000000

Built
1928
97 years old, rebuilt 2009
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
2,050
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 149 over Tilley Creek is a prestressed concrete box beam or girders - multiple carrying Ill 149 over Tilley Creek in Franklin County, Illinois. It was built in 1928 and reconstructed in 2009, 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 fair condition with a lowest component rating of 6 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 2,050 vehicles a day, roughly 8% of them trucks, projected to reach 2,071 by 2046. The structure is 43 ft (13.1 m) long and 33 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesIll 149
CrossesTilley Creek
Location3.4 MI W Ill 34
RouteState Highway 149
Coordinates37.90889, -88.82331
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10.2 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,050 (2023)
Projected traffic2,071 by 2046
Trucks8%
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

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 Tilley Creek built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 2009.

What condition is Ill 149 over Tilley Creek 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 May 2023.

How much traffic does Ill 149 over Tilley Creek carry?

About 2,050 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Ill 149 over Tilley Creek?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns Ill 149 over Tilley Creek?

It is owned by the State Highway Agency.