US Bridges

FM 220 Ave over Maquoketa River

Good

Delaware County, Iowa · 088043004 · Structure no. 000000000140811

Built
2008
17 years old
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
269 ft
3 main spans
Daily traffic
894
2022 count
Owner
County
County Highway Agency

About this bridge

FM 220 Ave over Maquoketa River is a prestressed concrete stringer/multi-beam or girder carrying FM 220 Ave over Maquoketa River in Delaware County, Iowa. It was built in 2008, so it is 17 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 894 vehicles a day, roughly 13% of them trucks, projected to reach 894 by 2043. The structure is 269 ft (82 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM 220 Ave
CrossesMaquoketa River
Location088043004
RouteCounty Highway 0
CountyDelaware County
StateIowa
Coordinates42.40974, -91.36356
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length269 ft (82 m)
Longest span121 ft (36.9 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic894 (2022)
Projected traffic894 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 220 Ave over Maquoketa River built?

It was built in 2008, making it 17 years old in 2025.

What condition is FM 220 Ave over Maquoketa River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2022.

How much traffic does FM 220 Ave over Maquoketa River carry?

About 894 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is FM 220 Ave over Maquoketa River?

The structure is 269 ft (82 m) long with a longest span of 121 ft (36.9 m) and a deck 30 ft wide.

Who owns FM 220 Ave over Maquoketa River?

It is owned by the County Highway Agency.