US Bridges

South Pearl ST over Middle Minerva Creek

Good

Story County, Iowa · Pearl ST O Mid Minerva CR · Structure no. 000000000012891

Built
2021
4 years old
Condition
Good
inspected November 2022
Type
Slab
Concrete Continuous
Length
71 ft
3 main spans
Daily traffic
383
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

South Pearl ST over Middle Minerva Creek is a concrete continuous slab carrying South Pearl ST over Middle Minerva Creek in Story County, Iowa. It was built in 2021, so it is 4 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 383 vehicles a day, projected to reach 383 by 2043. The structure is 71 ft (21.6 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSouth Pearl ST
CrossesMiddle Minerva Creek
LocationPearl ST O Mid Minerva CR
RouteCity Street 0
StateIowa
Coordinates42.15926, -93.29595
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 inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating45.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length71 ft (21.6 m)
Longest span28 ft (8.5 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic383 (2023)
Projected traffic383 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 South Pearl ST over Middle Minerva Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is South Pearl ST over Middle Minerva 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 2022.

How much traffic does South Pearl ST over Middle Minerva Creek carry?

About 383 vehicles per day (2023 count).

How long is South Pearl ST over Middle Minerva Creek?

The structure is 71 ft (21.6 m) long with a longest span of 28 ft (8.5 m) and a deck 33 ft wide.

Who owns South Pearl ST over Middle Minerva Creek?

It is owned by the City or Municipal Highway Agency.