US Bridges

105th St. over Deep Creek

Good

Clinton County, Iowa · 083E50503 · Structure no. 000000000125401

Built
1986
39 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete Continuous
Length
160 ft
5 main spans
Daily traffic
113
2022 count
Owner
County
County Highway Agency

About this bridge

105th St. over Deep Creek is a concrete continuous slab carrying 105th St. over Deep Creek in Clinton County, Iowa. It was built in 1986, so it is 39 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 113 vehicles a day, projected to reach 113 by 2044. The structure is 160 ft (48.8 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries105th St.
CrossesDeep Creek
Location083E50503
RouteCounty Highway 0
StateIowa
Coordinates42.02594, -90.41318
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
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 rating57.4 US tons
Inventory rating33.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span34 ft (10.4 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic113 (2022)
Projected traffic113 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 105th St. over Deep Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is 105th St. over Deep 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 January 2024.

How much traffic does 105th St. over Deep Creek carry?

About 113 vehicles per day (2022 count).

How long is 105th St. over Deep Creek?

The structure is 160 ft (48.8 m) long with a longest span of 34 ft (10.4 m) and a deck 32 ft wide.

Who owns 105th St. over Deep Creek?

It is owned by the County Highway Agency.