US Bridges

100th ST over Deep Creek

Good

Plymouth County, Iowa · 093430201 · Structure no. 000000000275971

Built
2006
19 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
94 ft
5 main spans
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

100th ST over Deep Creek is a wood or timber stringer/multi-beam or girder carrying 100th ST over Deep Creek in Plymouth County, Iowa. It was built in 2006, so it is 19 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 11 vehicles a day, projected to reach 11 by 2044. The structure is 94 ft (28.7 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries100th ST
CrossesDeep Creek
Location093430201
RouteCounty Highway 0
StateIowa
Coordinates42.90938, -95.8958
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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.9 US tons
Inventory rating29 US tons

Structure

MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length94 ft (28.7 m)
Longest span19 ft (5.8 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 by 2044
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 100th ST over Deep Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is 100th ST over Deep 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 2023.

How much traffic does 100th ST over Deep Creek carry?

About 11 vehicles per day (2022 count).

How long is 100th ST over Deep Creek?

The structure is 94 ft (28.7 m) long with a longest span of 19 ft (5.8 m) and a deck 24 ft wide.

Who owns 100th ST over Deep Creek?

It is owned by the County Highway Agency.