US Bridges

County RD 930 over ST Laurent CR

Good

Perry County, Missouri · S 962 T 36 N R 10 E · Structure no. 30962

Built
2005
20 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
35
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 930 over ST Laurent CR is a prestressed concrete box beam or girders - multiple carrying County RD 930 over ST Laurent CR in Perry County, Missouri. It was built in 2005, so it is 20 years old, younger than the Missouri average of 45.1 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 47 by 2043. The structure is 64 ft (19.5 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCounty RD 930
CrossesST Laurent CR
LocationS 962 T 36 N R 10 E
RouteCounty Highway 930
Coordinates37.85379, -89.9329
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating37.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span63 ft (19.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2023)
Projected traffic47 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 County RD 930 over ST Laurent CR built?

It was built in 2005, making it 20 years old in 2025.

What condition is County RD 930 over ST Laurent CR 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 County RD 930 over ST Laurent CR carry?

About 35 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 930 over ST Laurent CR?

The structure is 64 ft (19.5 m) long with a longest span of 63 ft (19.2 m) and a deck 24 ft wide.

Who owns County RD 930 over ST Laurent CR?

It is owned by the County Highway Agency.