US Bridges

300th Street over West Tarkio Creek

Good

Page County, Iowa · 067392001 · Structure no. 000000000265121

Built
1992
33 years old
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
246 ft
3 main spans
Daily traffic
20
2022 count
Owner
County
County Highway Agency

About this bridge

300th Street over West Tarkio Creek is a prestressed concrete stringer/multi-beam or girder carrying 300th Street over West Tarkio Creek in Page County, Iowa. It was built in 1992, so it is 33 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 20 vehicles a day, projected to reach 20 by 2042. The structure is 246 ft (75 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries300th Street
CrossesWest Tarkio Creek
Location067392001
RouteCounty Highway 0
StateIowa
Coordinates40.61142, -95.34196
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2022
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating37.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length246 ft (75 m)
Longest span81 ft (24.7 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2022)
Projected traffic20 by 2042
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 300th Street over West Tarkio Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is 300th Street over West Tarkio 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 October 2022.

How much traffic does 300th Street over West Tarkio Creek carry?

About 20 vehicles per day (2022 count).

How long is 300th Street over West Tarkio Creek?

The structure is 246 ft (75 m) long with a longest span of 81 ft (24.7 m) and a deck 27 ft wide.

Who owns 300th Street over West Tarkio Creek?

It is owned by the County Highway Agency.