US Bridges

FM over Lytle Creek

Good

Dubuque County, Iowa · 087E13608 · Structure no. 000000000145671

Built
1994
31 years old
Condition
Good
inspected February 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
165 ft
3 main spans
Daily traffic
370
2021 count
Owner
County
County Highway Agency

About this bridge

FM over Lytle Creek is a prestressed concrete continuous tee beam carrying FM over Lytle Creek in Dubuque County, Iowa. It was built in 1994, so it is 31 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 370 vehicles a day, roughly 19% of them trucks, projected to reach 370 by 2043. The structure is 165 ft (50.3 m) long and 33 ft wide.

CarriesFM
CrossesLytle Creek
Location087E13608
RouteCounty Highway 0
StateIowa
Coordinates42.29894, -90.78263
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 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 alignment7: Better than present minimum criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length165 ft (50.3 m)
Longest span56 ft (17.1 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic370 (2021)
Projected traffic370 by 2043
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 over Lytle Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is FM over Lytle 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 February 2023.

How much traffic does FM over Lytle Creek carry?

About 370 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is FM over Lytle Creek?

The structure is 165 ft (50.3 m) long with a longest span of 56 ft (17.1 m) and a deck 33 ft wide.

Who owns FM over Lytle Creek?

It is owned by the County Highway Agency.