US Bridges

County RD 328 over Hillers CR

Good

Callaway County, Missouri · S 8 T 46 N R 10 W · Structure no. 17478

Built
1992
33 years old
Condition
Good
inspected October 2024
Type
Slab
Wood or Timber
Length
60 ft
3 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 328 over Hillers CR is a wood or timber slab carrying County RD 328 over Hillers CR in Callaway 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 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 40 vehicles a day, roughly 5% of them trucks, projected to reach 60 by 2043. The structure is 60 ft (18.3 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty RD 328
CrossesHillers CR
LocationS 8 T 46 N R 10 W
RouteCounty Highway 154
CountyCallaway County
StateMissouri
Coordinates38.77856, -92.07896
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.5 US tons
Inventory rating41.7 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span32 ft (9.8 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic60 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 328 over Hillers CR built?

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

What condition is County RD 328 over Hillers 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 October 2024.

How much traffic does County RD 328 over Hillers CR carry?

About 40 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is County RD 328 over Hillers CR?

The structure is 60 ft (18.3 m) long with a longest span of 32 ft (9.8 m) and a deck 25 ft wide.

Who owns County RD 328 over Hillers CR?

It is owned by the County Highway Agency.