US Bridges

Summer ST over Spring Creek

Fair

Des Moines County, Iowa · 069032509 · Structure no. 000000000142921

Built
1988
37 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete Continuous
Length
44 ft
3 main spans
Daily traffic
1,530
2022 count
Owner
County
County Highway Agency

About this bridge

Summer ST over Spring Creek is a concrete continuous culvert carrying Summer ST over Spring Creek in Des Moines County, Iowa. It was built in 1988, so it is 37 years old, younger 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 6 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 1,530 vehicles a day, roughly 12% of them trucks, projected to reach 1,530 by 2043. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSummer ST
CrossesSpring Creek
Location069032509
RouteCounty Highway 0
CountyDes Moines County
StateIowa
Coordinates40.74269, -91.1449
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,530 (2022)
Projected traffic1,530 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Summer ST over Spring Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Summer ST over Spring 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 September 2023.

How much traffic does Summer ST over Spring Creek carry?

About 1,530 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Summer ST over Spring Creek?

The structure is 44 ft (13.4 m) long with a longest span of 14 ft (4.3 m).

Who owns Summer ST over Spring Creek?

It is owned by the County Highway Agency.