US Bridges

Vorhof Drive over Black Jack Crk

Good

St. Louis County, Missouri · S 5 T 46 N R 7 E · Structure no. 37033

Built
2022
3 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
86 ft
1 main span
Daily traffic
2,921
2023 count
Owner
County
County Highway Agency

About this bridge

Vorhof Drive over Black Jack Crk is a prestressed concrete tee beam carrying Vorhof Drive over Black Jack Crk in St. Louis County, Missouri. It was built in 2022, so it is 3 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: new structure not yet open to traffic.

It carries about 2,921 vehicles a day, roughly 10% of them trucks, projected to reach 4,674 by 2043. The structure is 86 ft (26.2 m) long and 37 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesVorhof Drive
CrossesBlack Jack Crk
LocationS 5 T 46 N R 7 E
RouteCounty Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.76278, -90.25639
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusNew structure not yet open to traffic
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable 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 rating73.4 US tons
Inventory rating56.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span82 ft (25.1 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,921 (2023)
Projected traffic4,674 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Vorhof Drive over Black Jack Crk built?

It was built in 2022, making it 3 years old in 2025.

What condition is Vorhof Drive over Black Jack Crk 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 June 2023.

How much traffic does Vorhof Drive over Black Jack Crk carry?

About 2,921 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Vorhof Drive over Black Jack Crk?

The structure is 86 ft (26.2 m) long with a longest span of 82 ft (25.1 m) and a deck 37 ft wide.

Who owns Vorhof Drive over Black Jack Crk?

It is owned by the County Highway Agency.