US Bridges

Silver Ave over Nelson Creek

Good

O'Brien County, Iowa · 09440180210 · Structure no. 000000000258891

Built
2016
9 years old
Condition
Good
inspected June 2023
Type
Other
Steel
Length
68 ft
1 main span
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

Silver Ave over Nelson Creek is a steel other carrying Silver Ave over Nelson Creek in O'Brien County, Iowa. It was built in 2016, so it is 9 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 45 vehicles a day, projected to reach 45 by 2043. The structure is 68 ft (20.7 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSilver Ave
CrossesNelson Creek
Location09440180210
RouteCounty Highway 0
CountyO'Brien County
StateIowa
Coordinates42.95959, -95.62377
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating23.6 US tons

Structure

Structure typeOther
MaterialSteel
DeckSteel plate
Main spans1
Design loadUnknown
Structure length68 ft (20.7 m)
Longest span66 ft (20.1 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)
Projected traffic45 by 2043
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$60,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Silver Ave over Nelson Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is Silver Ave over Nelson 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 June 2023.

How much traffic does Silver Ave over Nelson Creek carry?

About 45 vehicles per day (2022 count).

How long is Silver Ave over Nelson Creek?

The structure is 68 ft (20.7 m) long with a longest span of 66 ft (20.1 m) and a deck 27 ft wide.

Who owns Silver Ave over Nelson Creek?

It is owned by the County Highway Agency.