US Bridges

270th ST over Panther Creek

Good

Dallas County, Iowa · 079282201 · Structure no. 000000000131751

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Slab
Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

270th ST over Panther Creek is a concrete continuous slab carrying 270th ST over Panther Creek in Dallas 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 60 vehicles a day, roughly 13% of them trucks, projected to reach 60 by 2043. The structure is 103 ft (31.4 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries270th ST
CrossesPanther Creek
Location079282201
RouteCounty Highway 0
CountyDallas County
StateIowa
Coordinates41.64403, -94.10557
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length103 ft (31.4 m)
Longest span39 ft (11.9 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic60 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$950,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 270th ST over Panther Creek built?

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

What condition is 270th ST over Panther 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 November 2023.

How much traffic does 270th ST over Panther Creek carry?

About 60 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is 270th ST over Panther Creek?

The structure is 103 ft (31.4 m) long with a longest span of 39 ft (11.9 m) and a deck 33 ft wide.

Who owns 270th ST over Panther Creek?

It is owned by the County Highway Agency.