US Bridges

E18/130th ST over Middle Minerva Creek

Fair

Story County, Iowa · 085211901 · Structure no. 000000000315771

Built
1973
52 years old
Condition
Fair
inspected November 2022
Type
Culvert
Concrete Continuous
Length
36 ft
2 main spans
Daily traffic
638
2022 count
Owner
County
County Highway Agency

About this bridge

E18/130th ST over Middle Minerva Creek is a concrete continuous culvert carrying E18/130th ST over Middle Minerva Creek in Story County, Iowa. It was built in 1973, so it is 52 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 638 vehicles a day, roughly 13% of them trucks, projected to reach 638 by 2043. The structure is 36 ft (11 m) long. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesE18/130th ST
CrossesMiddle Minerva Creek
Location085211901
RouteCounty Highway 0
CountyStory County
StateIowa
Coordinates42.1663, -93.33677
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 rating78.9 US tons
Inventory rating47.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length36 ft (11 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic638 (2022)
Projected traffic638 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 E18/130th ST over Middle Minerva Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is E18/130th ST over Middle Minerva Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2022.

How much traffic does E18/130th ST over Middle Minerva Creek carry?

About 638 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is E18/130th ST over Middle Minerva Creek?

The structure is 36 ft (11 m) long with a longest span of 12 ft (3.7 m).

Who owns E18/130th ST over Middle Minerva Creek?

It is owned by the County Highway Agency.