US Bridges

E18/130th ST over Keigley Branch

FairPosted for load

Story County, Iowa · 085242101 · Structure no. 000000000316380

Built
1967
58 years old
Condition
Fair
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
58 ft
1 main span
Daily traffic
1,427
2022 count
Owner
County
County Highway Agency

About this bridge

E18/130th ST over Keigley Branch is a steel stringer/multi-beam or girder carrying E18/130th ST over Keigley Branch in Story County, Iowa. It was built in 1967, so it is 58 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. Its operating status is: posted for load restriction.

It carries about 1,427 vehicles a day, roughly 10% of them trucks, projected to reach 1,427 by 2043. The structure is 58 ft (17.7 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesE18/130th ST
CrossesKeigley Branch
Location085242101
RouteCounty Highway 0
CountyStory County
StateIowa
Coordinates42.16628, -93.64302
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: 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 rating38.1 US tons
Inventory rating22.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length58 ft (17.7 m)
Longest span55 ft (16.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,427 (2022)
Projected traffic1,427 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Keigley Branch built?

It was built in 1967, making it 58 years old in 2025.

What condition is E18/130th ST over Keigley Branch 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 Keigley Branch carry?

About 1,427 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is E18/130th ST over Keigley Branch?

The structure is 58 ft (17.7 m) long with a longest span of 55 ft (16.8 m) and a deck 30 ft wide.

Who owns E18/130th ST over Keigley Branch?

It is owned by the County Highway Agency.