US Bridges

County RD 328 over Bear CR

PoorPosted for load

Clark County, Missouri · S 15 T 63 N R 9 W · Structure no. 21882

Built
1910
115 years old
Condition
Poor
inspected August 2023
Type
Truss - Thru
Steel
Length
70 ft
1 main span
Daily traffic
5
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 328 over Bear CR is a steel truss - thru carrying County RD 328 over Bear CR in Clark County, Missouri. It was built in 1910, so it is 115 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, roughly 10% of them trucks, projected to reach 6 by 2044. The structure is 70 ft (21.3 m) long and 12 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCounty RD 328
CrossesBear CR
LocationS 15 T 63 N R 9 W
RouteCounty Highway 328
CountyClark County
StateMissouri
Coordinates40.26681, -91.88517
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating5 US tons
Inventory rating3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadOther
Structure length70 ft (21.3 m)
Longest span45 ft (13.7 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2024)
Projected traffic6 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$527,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 328 over Bear CR built?

It was built in 1910, making it 115 years old in 2025.

What condition is County RD 328 over Bear CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

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

About 5 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 328 over Bear CR?

The structure is 70 ft (21.3 m) long with a longest span of 45 ft (13.7 m) and a deck 12 ft wide.

Who owns County RD 328 over Bear CR?

It is owned by the County Highway Agency.