US Bridges

County RD 157 over Riggin Br

Fair

Andrew County, Missouri · S 16 T 60 N R 35 W · Structure no. 17590

Built
1992
33 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
38 ft
2 main spans
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 157 over Riggin Br is a concrete culvert carrying County RD 157 over Riggin Br in Andrew County, Missouri. It was built in 1992, so it is 33 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 115 by 2044. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCounty RD 157
CrossesRiggin Br
LocationS 16 T 60 N R 35 W
RouteCounty Highway 157
CountyAndrew County
StateMissouri
Coordinates40.01097, -94.82623
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic115 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 157 over Riggin Br built?

It was built in 1992, making it 33 years old in 2025.

What condition is County RD 157 over Riggin Br in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.

How much traffic does County RD 157 over Riggin Br carry?

About 100 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 157 over Riggin Br?

The structure is 38 ft (11.6 m) long with a longest span of 15 ft (4.6 m).

Who owns County RD 157 over Riggin Br?

It is owned by the County Highway Agency.