US Bridges

HWY 927 over Elkhorn Creek

Poor

Muscatine County, Iowa · 078010403 · Structure no. 000000000037910

Built
1929
96 years old, rebuilt 1957
Condition
Poor
inspected September 2024
Type
Girder and Floorbeam System
Steel
Length
62 ft
1 main span
Daily traffic
2,340
2022 count
Owner
County
County Highway Agency

About this bridge

HWY 927 over Elkhorn Creek is a steel girder and floorbeam system carrying HWY 927 over Elkhorn Creek in Muscatine County, Iowa. It was built in 1929 and reconstructed in 1957, so it is 96 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,340 vehicles a day, projected to reach 2,340 by 2044. The structure is 62 ft (18.9 m) long and 34 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesHWY 927
CrossesElkhorn Creek
Location078010403
RouteCounty Highway 0
CountyMuscatine County
StateIowa
Coordinates41.59641, -90.97137
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating21.9 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length62 ft (18.9 m)
Longest span60 ft (18.3 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,340 (2022)
Projected traffic2,340 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was HWY 927 over Elkhorn Creek built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1957.

What condition is HWY 927 over Elkhorn Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does HWY 927 over Elkhorn Creek carry?

About 2,340 vehicles per day (2022 count).

How long is HWY 927 over Elkhorn Creek?

The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 34 ft wide.

Who owns HWY 927 over Elkhorn Creek?

It is owned by the County Highway Agency.