US Bridges

Ia 14 over Alloway Creek

Good

Jasper County, Iowa · 1.6 Mi. S. of Ia 224 · Structure no. 000000000030691

Built
2023
2 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
133 ft
1 main span
Daily traffic
1,360
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 14 over Alloway Creek is a prestressed concrete stringer/multi-beam or girder carrying Ia 14 over Alloway Creek in Jasper County, Iowa. It was built in 2023, so it is 2 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 1,360 vehicles a day, roughly 16% of them trucks, projected to reach 1,360 by 2044. The structure is 133 ft (40.5 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIa 14
CrossesAlloway Creek
Location1.6 Mi. S. of Ia 224
RouteState Highway 14
CountyJasper County
StateIowa
Coordinates41.81973, -92.9538
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length133 ft (40.5 m)
Longest span130 ft (39.6 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,360 (2022)
Projected traffic1,360 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ia 14 over Alloway Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is Ia 14 over Alloway 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 April 2024.

How much traffic does Ia 14 over Alloway Creek carry?

About 1,360 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is Ia 14 over Alloway Creek?

The structure is 133 ft (40.5 m) long with a longest span of 130 ft (39.6 m) and a deck 47 ft wide.

Who owns Ia 14 over Alloway Creek?

It is owned by the State Highway Agency.