US Bridges

C51 115th ST over Small Stream

Good

Franklin County, Iowa · 91191505 · Structure no. 000000000156841

Built
2016
9 years old
Condition
Good
inspected June 2021
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
59
2022 count
Owner
County
County Highway Agency

About this bridge

C51 115th ST over Small Stream is a concrete culvert carrying C51 115th ST over Small Stream in Franklin 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 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 59 vehicles a day, projected to reach 59 by 2043. The structure is 26 ft (7.9 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesC51 115th ST
CrossesSmall Stream
Location91191505
RouteCounty Highway 0
StateIowa
Coordinates42.69417, -93.08281
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span10 ft (3 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59 (2022)
Projected traffic59 by 2043
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 C51 115th ST over Small Stream built?

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

What condition is C51 115th ST 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 June 2021.

How much traffic does C51 115th ST over Small Stream carry?

About 59 vehicles per day (2022 count).

How long is C51 115th ST over Small Stream?

The structure is 26 ft (7.9 m) long with a longest span of 10 ft (3 m) and a deck 28 ft wide.

Who owns C51 115th ST over Small Stream?

It is owned by the County Highway Agency.