US Bridges

York Ave over North River

FairPosted for load

Adair County, Iowa · 077303602 · Structure no. 000000000057720

Built
1915
110 years old
Condition
Fair
inspected May 2023
Type
Truss - Thru
Steel
Length
77 ft
1 main span
Daily traffic
35
2021 count
Owner
County
County Highway Agency

About this bridge

York Ave over North River is a steel truss - thru carrying York Ave over North River in Adair County, Iowa. It was built in 1915, so it is 110 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 23% of them trucks, projected to reach 35 by 2043. The structure is 77 ft (23.5 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesYork Ave
CrossesNorth River
Location077303602
RouteCounty Highway 0
CountyAdair County
StateIowa
Coordinates41.41953, -94.26066
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 alignment7: Better than present minimum criteria
Operating rating20 US tons
Inventory rating13.4 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length77 ft (23.5 m)
Longest span75 ft (22.9 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2021)
Projected traffic35 by 2043
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was York Ave over North River built?

It was built in 1915, making it 110 years old in 2025.

What condition is York Ave over North River 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 May 2023.

How much traffic does York Ave over North River carry?

About 35 vehicles per day (2021 count), of which roughly 23% are trucks.

How long is York Ave over North River?

The structure is 77 ft (23.5 m) long with a longest span of 75 ft (22.9 m) and a deck 16 ft wide.

Who owns York Ave over North River?

It is owned by the County Highway Agency.