US Bridges

D61 over Lytles Creek

Good

Jackson County, Iowa · R2ET86NS21SE · Structure no. 000000000194181

Built
2016
9 years old, rebuilt 2017
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
164 ft
3 main spans
Daily traffic
660
2021 count
Owner
County
County Highway Agency

About this bridge

D61 over Lytles Creek is a prestressed concrete stringer/multi-beam or girder carrying D61 over Lytles Creek in Jackson County, Iowa. It was built in 2016 and reconstructed in 2017, so it is 9 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 660 vehicles a day, roughly 13% of them trucks, projected to reach 660 by 2043. The structure is 164 ft (49.9 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesD61
CrossesLytles Creek
LocationR2ET86NS21SE
RouteCounty Highway 0
StateIowa
Coordinates42.24143, -90.73334
Functional classRural Major 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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating50.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length164 ft (49.9 m)
Longest span61 ft (18.5 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic660 (2021)
Projected traffic660 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 D61 over Lytles Creek built?

It was built in 2016, making it 9 years old in 2025. It was reconstructed in 2017.

What condition is D61 over Lytles Creek 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 March 2023.

How much traffic does D61 over Lytles Creek carry?

About 660 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is D61 over Lytles Creek?

The structure is 164 ft (49.9 m) long with a longest span of 61 ft (18.5 m) and a deck 33 ft wide.

Who owns D61 over Lytles Creek?

It is owned by the County Highway Agency.