US Bridges

Il 104 over Woods Creek

Fair

Morgan County, Illinois · 2.98M W Il 111 · Structure no. 069002200000000

Built
1934
91 years old, rebuilt 2008
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
2,300
2023 count
Owner
State
State Highway Agency

About this bridge

Il 104 over Woods Creek is a prestressed concrete box beam or girders - multiple carrying Il 104 over Woods Creek in Morgan County, Illinois. It was built in 1934 and reconstructed in 2008, so it is 91 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 2,300 vehicles a day, roughly 7% of them trucks, projected to reach 2,778 by 2046. The structure is 45 ft (13.6 m) long and 33 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesIl 104
CrossesWoods Creek
Location2.98M W Il 111
RouteState Highway 104
Coordinates39.59353, -90.01302
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length45 ft (13.6 m)
Longest span41 ft (12.5 m)
Deck width33 ft (10.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2023)
Projected traffic2,778 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Il 104 over Woods Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 2008.

What condition is Il 104 over Woods 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 September 2023.

How much traffic does Il 104 over Woods Creek carry?

About 2,300 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Il 104 over Woods Creek?

The structure is 45 ft (13.6 m) long with a longest span of 41 ft (12.5 m) and a deck 33 ft wide.

Who owns Il 104 over Woods Creek?

It is owned by the State Highway Agency.