US Bridges

110th St. over Elwood Creek

Good

Clinton County, Iowa · 083E21001 · Structure no. 000000000124701

Built
1971
54 years old
Condition
Good
inspected December 2023
Type
Slab
Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
82
2022 count
Owner
County
County Highway Agency

About this bridge

110th St. over Elwood Creek is a concrete continuous slab carrying 110th St. over Elwood Creek in Clinton County, Iowa. It was built in 1971, so it is 54 years old, older 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 82 vehicles a day, projected to reach 82 by 2043. The structure is 103 ft (31.4 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Carries110th St.
CrossesElwood Creek
Location083E21001
RouteCounty Highway 0
StateIowa
Coordinates42.01839, -90.7054
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating61 US tons
Inventory rating38.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span39 ft (11.9 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic82 (2022)
Projected traffic82 by 2043
Trucks0%
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 110th St. over Elwood Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is 110th St. over Elwood 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 December 2023.

How much traffic does 110th St. over Elwood Creek carry?

About 82 vehicles per day (2022 count).

How long is 110th St. over Elwood Creek?

The structure is 103 ft (31.4 m) long with a longest span of 39 ft (11.9 m) and a deck 32 ft wide.

Who owns 110th St. over Elwood Creek?

It is owned by the County Highway Agency.