US Bridges

Local over Maquoketa River

FairPosted for load

Jackson County, Iowa · 085E33103 · Structure no. 000000000193610

Built
1958
67 years old
Condition
Fair
inspected April 2024
Type
Truss - Thru
Steel
Length
323 ft
1 main span
Daily traffic
40
2021 count
Owner
County
County Highway Agency

About this bridge

Local over Maquoketa River is a steel truss - thru carrying Local over Maquoketa River in Jackson County, Iowa. It was built in 1958, so it is 67 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 40 vehicles a day, projected to reach 40 by 2044. The structure is 323 ft (98.5 m) long and 20 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesLocal
CrossesMaquoketa River
Location085E33103
RouteCounty Highway 0
CountyJackson County
StateIowa
Coordinates42.13523, -90.64847
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 inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.3 US tons
Inventory rating11.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 15
Structure length323 ft (98.5 m)
Longest span160 ft (48.8 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic40 (2021)
Projected traffic40 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Local over Maquoketa River built?

It was built in 1958, making it 67 years old in 2025.

What condition is Local over Maquoketa 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 April 2024.

How much traffic does Local over Maquoketa River carry?

About 40 vehicles per day (2021 count).

How long is Local over Maquoketa River?

The structure is 323 ft (98.5 m) long with a longest span of 160 ft (48.8 m) and a deck 20 ft wide.

Who owns Local over Maquoketa River?

It is owned by the County Highway Agency.