US Bridges

Local over Six Mile Creek

Good

Sioux County, Iowa · 094470701 · Structure no. 000000000309231

Built
1983
42 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
154 ft
3 main spans
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Six Mile Creek is a prestressed concrete stringer/multi-beam or girder carrying Local over Six Mile Creek in Sioux County, Iowa. It was built in 1983, so it is 42 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 45 vehicles a day, projected to reach 45 by 2044. The structure is 154 ft (46.9 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLocal
CrossesSix Mile Creek
Location094470701
RouteCounty Highway 0
StateIowa
Coordinates42.98216, -96.4419
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 protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.9 US tons
Inventory rating30.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length154 ft (46.9 m)
Longest span56 ft (17.1 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)
Projected traffic45 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Local over Six Mile Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Local over Six Mile 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 Local over Six Mile Creek carry?

About 45 vehicles per day (2022 count).

How long is Local over Six Mile Creek?

The structure is 154 ft (46.9 m) long with a longest span of 56 ft (17.1 m) and a deck 33 ft wide.

Who owns Local over Six Mile Creek?

It is owned by the County Highway Agency.