US Bridges

Union Avenue over Saylings Creek

PoorPosted for load

Adams County, Iowa · 071321002 · Structure no. 000000000058641

Built
1965
60 years old, rebuilt 1980
Condition
Poor
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

Union Avenue over Saylings Creek is a steel stringer/multi-beam or girder carrying Union Avenue over Saylings Creek in Adams County, Iowa. It was built in 1965 and reconstructed in 1980, so it is 60 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 3 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. Its operating status is: posted for load restriction.

It carries about 26 vehicles a day, projected to reach 26 by 2044. The structure is 61 ft (18.6 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUnion Avenue
CrossesSaylings Creek
Location071321002
RouteCounty Highway 0
StateIowa
Coordinates40.96036, -94.52769
Functional classRural Local

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.5 US tons
Inventory rating17.7 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span59 ft (18 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$634,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Union Avenue over Saylings Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1980.

What condition is Union Avenue over Saylings 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 January 2024.

How much traffic does Union Avenue over Saylings Creek carry?

About 26 vehicles per day (2022 count).

How long is Union Avenue over Saylings Creek?

The structure is 61 ft (18.6 m) long with a longest span of 59 ft (18 m) and a deck 24 ft wide.

Who owns Union Avenue over Saylings Creek?

It is owned by the County Highway Agency.