US Bridges

FM over Lytle Creek

Good

Dubuque County, Iowa · 087E20403 · Structure no. 000000000145690

Built
1982
43 years old
Condition
Good
inspected March 2023
Type
Culvert
Steel
Length
34 ft
2 main spans
Daily traffic
1,270
2021 count
Owner
County
County Highway Agency

About this bridge

FM over Lytle Creek is a steel culvert carrying FM over Lytle Creek in Dubuque County, Iowa. It was built in 1982, so it is 43 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 1,270 vehicles a day, projected to reach 1,270 by 2043. The structure is 34 ft (10.4 m) long.

CarriesFM
CrossesLytle Creek
Location087E20403
RouteCounty Highway 0
StateIowa
Coordinates42.38204, -90.72537
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating34 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length34 ft (10.4 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,270 (2021)
Projected traffic1,270 by 2043
Trucks0%
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 1982, making it 43 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 March 2023.

How much traffic does FM over Lytle Creek carry?

About 1,270 vehicles per day (2021 count).

How long is FM over Lytle Creek?

The structure is 34 ft (10.4 m) long with a longest span of 15 ft (4.6 m).

Who owns FM over Lytle Creek?

It is owned by the County Highway Agency.