US Bridges

Shockley RD over Unnamed Str

GoodPosted for load

Gasconade County, Missouri · S 15 T 42 N R 6 W · Structure no. 36856

Built
2021
4 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete Continuous
Length
40 ft
3 main spans
Daily traffic
51
2024 count
Owner
County
County Highway Agency

About this bridge

Shockley RD over Unnamed Str is a concrete continuous slab carrying Shockley RD over Unnamed Str in Gasconade County, Missouri. It was built in 2021, so it is 4 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 8 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: posted for load restriction.

It carries about 51 vehicles a day, roughly 10% of them trucks, projected to reach 61 by 2044. The structure is 40 ft (12.2 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesShockley RD
CrossesUnnamed Str
LocationS 15 T 42 N R 6 W
RouteCounty Highway 109
Coordinates38.3872, -91.57377
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34.7 US tons
Inventory rating20.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span12 ft (3.8 m)
Deck width21 ft (6.4 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2024)
Projected traffic61 by 2044
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Shockley RD over Unnamed Str built?

It was built in 2021, making it 4 years old in 2025.

What condition is Shockley RD over Unnamed Str 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 March 2024.

How much traffic does Shockley RD over Unnamed Str carry?

About 51 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Shockley RD over Unnamed Str?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.8 m) and a deck 21 ft wide.

Who owns Shockley RD over Unnamed Str?

It is owned by the County Highway Agency.