US Bridges

County RD 328 over Br of Hillers CR

Fair

Callaway County, Missouri · S 9 T 46 N R 10 W · Structure no. 17502

Built
1912
113 years old, rebuilt 1988
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
75
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 328 over Br of Hillers CR is a steel stringer/multi-beam or girder carrying County RD 328 over Br of Hillers CR in Callaway County, Missouri. It was built in 1912 and reconstructed in 1988, so it is 113 years old, older 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 75 vehicles a day, roughly 10% of them trucks, projected to reach 113 by 2043. The structure is 27 ft (8.2 m) long and 20 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCounty RD 328
CrossesBr of Hillers CR
LocationS 9 T 46 N R 10 W
RouteCounty Highway 154
CountyCallaway County
StateMissouri
Coordinates38.77742, -92.0445
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating52.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2023)
Projected traffic113 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Br of Hillers CR built?

It was built in 1912, making it 113 years old in 2025. It was reconstructed in 1988.

What condition is County RD 328 over Br of Hillers CR 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 October 2024.

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

About 75 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 328 over Br of Hillers CR?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 20 ft wide.

Who owns County RD 328 over Br of Hillers CR?

It is owned by the County Highway Agency.