US Bridges

D16 Otterville over Small Stream

Good

Buchanan County, Iowa · 089092801 · Structure no. 000000000083001

Built
2019
6 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete Continuous
Length
73 ft
3 main spans
Daily traffic
805
2022 count
Owner
County
County Highway Agency

About this bridge

D16 Otterville over Small Stream is a concrete continuous slab carrying D16 Otterville over Small Stream in Buchanan County, Iowa. It was built in 2019, so it is 6 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 805 vehicles a day, roughly 18% of them trucks, projected to reach 805 by 2044. The structure is 73 ft (22.3 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesD16 Otterville
CrossesSmall Stream
Location089092801
RouteCounty Highway 0
CountyBuchanan County
StateIowa
Coordinates42.49751, -91.91669
Functional classRural Major 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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating76.8 US tons
Inventory rating46 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length73 ft (22.3 m)
Longest span28 ft (8.5 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic805 (2022)
Projected traffic805 by 2044
Trucks18%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was D16 Otterville over Small Stream built?

It was built in 2019, making it 6 years old in 2025.

What condition is D16 Otterville over Small Stream 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 February 2024.

How much traffic does D16 Otterville over Small Stream carry?

About 805 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is D16 Otterville over Small Stream?

The structure is 73 ft (22.3 m) long with a longest span of 28 ft (8.5 m) and a deck 43 ft wide.

Who owns D16 Otterville over Small Stream?

It is owned by the County Highway Agency.