US Bridges

County RD 173 over Judith CR

Good

Audrain County, Missouri · S 18 T 52 N R 12 W · Structure no. 30075

Built
2003
22 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
43 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 173 over Judith CR is a steel stringer/multi-beam or girder carrying County RD 173 over Judith CR in Audrain County, Missouri. It was built in 2003, so it is 22 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 63 by 2043. The structure is 43 ft (13 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCounty RD 173
CrossesJudith CR
LocationS 18 T 52 N R 12 W
RouteCounty Highway 22
Coordinates39.30192, -92.29911
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure9 ExcellentNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.3 US tons
Inventory rating54.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length43 ft (13 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic63 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 173 over Judith CR built?

It was built in 2003, making it 22 years old in 2025.

What condition is County RD 173 over Judith 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 April 2023.

How much traffic does County RD 173 over Judith CR carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 173 over Judith CR?

The structure is 43 ft (13 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns County RD 173 over Judith CR?

It is owned by the County Highway Agency.