US Bridges

Local RD over Drainage

Poor

Madison County, Iowa · 077280103 · Structure no. 000000000234930

Built
1956
69 years old
Condition
Poor
inspected August 2024
Type
Culvert
Concrete Continuous
Length
20 ft
2 main spans
Daily traffic
61
2022 count
Owner
County
County Highway Agency

About this bridge

Local RD over Drainage is a concrete continuous culvert carrying Local RD over Drainage in Madison County, Iowa. It was built in 1956, so it is 69 years old, older than the Iowa average of 45.5 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.

It carries about 61 vehicles a day, projected to reach 61 by 2044. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesLocal RD
CrossesDrainage
Location077280103
RouteCounty Highway 0
CountyMadison County
StateIowa
Coordinates41.49605, -94.01474
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
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 20
Structure length20 ft (6.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61 (2022)
Projected traffic61 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$243,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local RD over Drainage built?

It was built in 1956, making it 69 years old in 2025.

What condition is Local RD over Drainage 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 2024.

How much traffic does Local RD over Drainage carry?

About 61 vehicles per day (2022 count).

How long is Local RD over Drainage?

The structure is 20 ft (6.1 m) long with a longest span of 10 ft (3 m).

Who owns Local RD over Drainage?

It is owned by the County Highway Agency.