US Bridges

Local RD over North River

PoorClosed to traffic

Madison County, Iowa · 076291104 · Structure no. 000000000234360

Built
1909
116 years old
Condition
Poor
inspected August 2023
Type
Truss - Thru
Steel
Length
100 ft
1 main span
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

Local RD over North River is a steel truss - thru carrying Local RD over North River in Madison County, Iowa. It was built in 1909, so it is 116 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 0 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: closed to all traffic.

It carries about 26 vehicles a day, projected to reach 26 by 2043. The structure is 100 ft (30.5 m) long and 14 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLocal RD
CrossesNorth River
Location076291104
RouteCounty Highway 0
CountyMadison County
StateIowa
Coordinates41.39884, -94.16023
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
Deck0 FailedOut of service and beyond corrective action.
Superstructure0 FailedOut of service and beyond corrective action.
Substructure0 FailedOut of service and beyond corrective action.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+1 approach)
Design loadUnknown
Structure length100 ft (30.5 m)
Longest span70 ft (21.3 m)
Deck width14 ft (4.2 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local RD over North River built?

It was built in 1909, making it 116 years old in 2025.

What condition is Local RD over North River 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 Local RD over North River carry?

About 26 vehicles per day (2022 count).

How long is Local RD over North River?

The structure is 100 ft (30.5 m) long with a longest span of 70 ft (21.3 m) and a deck 14 ft wide.

Who owns Local RD over North River?

It is owned by the County Highway Agency.