US Bridges

Muni 6030 over Crooked Creek

Good

Macoupin County, Illinois · Royal Lakes · Structure no. 059344400000000

Built
2009
16 years old
Condition
Good
inspected January 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
125
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Muni 6030 over Crooked Creek is a prestressed concrete box beam or girders - multiple carrying Muni 6030 over Crooked Creek in Macoupin County, Illinois. It was built in 2009, so it is 16 years old, younger 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 125 vehicles a day, roughly 7% of them trucks, projected to reach 126 by 2046. The structure is 72 ft (21.8 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMuni 6030
CrossesCrooked Creek
LocationRoyal Lakes
RouteCity Street 0
Coordinates39.11027, -89.96098
Functional classRural Local

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length72 ft (21.8 m)
Longest span69 ft (21.1 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2021)
Projected traffic126 by 2046
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Muni 6030 over Crooked Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is Muni 6030 over Crooked Creek 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 2023.

How much traffic does Muni 6030 over Crooked Creek carry?

About 125 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Muni 6030 over Crooked Creek?

The structure is 72 ft (21.8 m) long with a longest span of 69 ft (21.1 m) and a deck 27 ft wide.

Who owns Muni 6030 over Crooked Creek?

It is owned by the City or Municipal Highway Agency.