US Bridges

E54 over Monona-Harrison Ditch

Good

Monona County, Iowa · 083443203 · Structure no. 000000000250211

Built
2015
10 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
214 ft
3 main spans
Daily traffic
289
2022 count
Owner
County
County Highway Agency

About this bridge

E54 over Monona-Harrison Ditch is a prestressed concrete stringer/multi-beam or girder carrying E54 over Monona-Harrison Ditch in Monona County, Iowa. It was built in 2015, so it is 10 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 289 vehicles a day, roughly 16% of them trucks, projected to reach 289 by 2044. The structure is 214 ft (65.2 m) long and 33 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesE54
CrossesMonona-Harrison Ditch
Location083443203
RouteCounty Highway 0
CountyMonona County
StateIowa
Coordinates41.96497, -95.99191
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 48 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 alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length214 ft (65.2 m)
Longest span77 ft (23.6 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic289 (2022)
Projected traffic289 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was E54 over Monona-Harrison Ditch built?

It was built in 2015, making it 10 years old in 2025.

What condition is E54 over Monona-Harrison Ditch 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 May 2024.

How much traffic does E54 over Monona-Harrison Ditch carry?

About 289 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is E54 over Monona-Harrison Ditch?

The structure is 214 ft (65.2 m) long with a longest span of 77 ft (23.6 m) and a deck 33 ft wide.

Who owns E54 over Monona-Harrison Ditch?

It is owned by the County Highway Agency.