US Bridges

Douglas-Millstadt over Douglas Creek

Fair

St. Clair County, Illinois · 0.5 MI W Il 159 · Structure no. 082309300000000

Built
1996
29 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
112 ft
3 main spans
Daily traffic
3,200
2023 count
Owner
County
County Highway Agency

About this bridge

Douglas-Millstadt over Douglas Creek is a prestressed concrete box beam or girders - multiple carrying Douglas-Millstadt over Douglas Creek in St. Clair County, Illinois. It was built in 1996, so it is 29 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 3,200 vehicles a day, roughly 8% of them trucks, projected to reach 3,333 by 2046. The structure is 112 ft (34 m) long and 33 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesDouglas-Millstadt
CrossesDouglas Creek
Location0.5 MI W Il 159
RouteCounty Highway 0
CountySt. Clair County
StateIllinois
Coordinates38.42466, -89.98768
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
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
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 rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length112 ft (34 m)
Longest span50 ft (15.2 m)
Deck width33 ft (10.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,200 (2023)
Projected traffic3,333 by 2046
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Douglas-Millstadt over Douglas Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Douglas-Millstadt over Douglas 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 June 2024.

How much traffic does Douglas-Millstadt over Douglas Creek carry?

About 3,200 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Douglas-Millstadt over Douglas Creek?

The structure is 112 ft (34 m) long with a longest span of 50 ft (15.2 m) and a deck 33 ft wide.

Who owns Douglas-Millstadt over Douglas Creek?

It is owned by the County Highway Agency.