US Bridges

Niewald RD over Soap CR

Good

Gasconade County, Missouri · S 19 T 42 N R 4 W · Structure no. 35794

Built
2017
8 years old
Condition
Good
inspected March 2024
Type
Slab
Concrete
Length
24 ft
2 main spans
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

Niewald RD over Soap CR is a concrete slab carrying Niewald RD over Soap CR in Gasconade County, Missouri. It was built in 2017, so it is 8 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 60 by 2044. The structure is 24 ft (7.4 m) long and 24 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesNiewald RD
CrossesSoap CR
LocationS 19 T 42 N R 4 W
RouteCounty Highway 143
CountyGasconade County
StateMissouri
Coordinates38.36156, -91.40533
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length24 ft (7.4 m)
Longest span12 ft (3.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic60 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Niewald RD over Soap CR built?

It was built in 2017, making it 8 years old in 2025.

What condition is Niewald RD over Soap 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 March 2024.

How much traffic does Niewald RD over Soap CR carry?

About 50 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Niewald RD over Soap CR?

The structure is 24 ft (7.4 m) long with a longest span of 12 ft (3.6 m) and a deck 24 ft wide.

Who owns Niewald RD over Soap CR?

It is owned by the County Highway Agency.