US Bridges

D68 390th ST over Buttrick Creek

Good

Webster County, Iowa · 086303301 · Structure no. 000000000341841

Built
2015
10 years old
Condition
Good
inspected November 2021
Type
Slab
Concrete Continuous
Length
93 ft
3 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

D68 390th ST over Buttrick Creek is a concrete continuous slab carrying D68 390th ST over Buttrick Creek in Webster County, Iowa. It was built in 2015, so it is 10 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 50 vehicles a day, projected to reach 50 by 2041. The structure is 93 ft (28.3 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesD68 390th ST
CrossesButtrick Creek
Location086303301
RouteCounty Highway 0
CountyWebster County
StateIowa
Coordinates42.22373, -94.35487
Functional classRural Minor Collector

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 inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum 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 typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length93 ft (28.3 m)
Longest span35 ft (10.7 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic50 by 2041
Trucks0%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was D68 390th ST over Buttrick Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is D68 390th ST over Buttrick 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 2021.

How much traffic does D68 390th ST over Buttrick Creek carry?

About 50 vehicles per day (2022 count).

How long is D68 390th ST over Buttrick Creek?

The structure is 93 ft (28.3 m) long with a longest span of 35 ft (10.7 m) and a deck 33 ft wide.

Who owns D68 390th ST over Buttrick Creek?

It is owned by the County Highway Agency.