US Bridges

County RD 020 over Cedar CR

PoorPosted for load

Iron County, Missouri · S 3 T 34 N R 2 E · Structure no. 28546

Built
1950
75 years old, rebuilt 1975
Condition
Poor
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
55 ft
3 main spans
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 020 over Cedar CR is a steel stringer/multi-beam or girder carrying County RD 020 over Cedar CR in Iron County, Missouri. It was built in 1950 and reconstructed in 1975, so it is 75 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 3 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2043. The structure is 55 ft (16.8 m) long and 19 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCounty RD 020
CrossesCedar CR
LocationS 3 T 34 N R 2 E
RouteCounty Highway 20
Coordinates37.6915, -90.8169
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating22.8 US tons
Inventory rating13.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length55 ft (16.8 m)
Longest span19 ft (5.8 m)
Deck width19 ft (5.7 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic120 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$438,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 020 over Cedar CR built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1975.

What condition is County RD 020 over Cedar 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 February 2025.

How much traffic does County RD 020 over Cedar CR carry?

About 100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 020 over Cedar CR?

The structure is 55 ft (16.8 m) long with a longest span of 19 ft (5.8 m) and a deck 19 ft wide.

Who owns County RD 020 over Cedar CR?

It is owned by the County Highway Agency.