US Bridges

Center ST over Deer Creek

Poor

Tama County, Iowa · 084161401 · Structure no. 000000000005431

Built
1982
43 years old
Condition
Poor
inspected September 2024
Type
Slab
Concrete Continuous
Length
159 ft
4 main spans
Daily traffic
1,019
2022 count
Owner
County
County Highway Agency

About this bridge

Center ST over Deer Creek is a concrete continuous slab carrying Center ST over Deer Creek in Tama County, Iowa. It was built in 1982, so it is 43 years old, younger 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 1,019 vehicles a day, roughly 7% of them trucks, projected to reach 1,019 by 2044. The structure is 159 ft (48.5 m) long and 32 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesCenter ST
CrossesDeer Creek
Location084161401
RouteCity Street 0
StateIowa
Coordinates42.09355, -92.68396
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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.7 US tons
Inventory rating31.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length159 ft (48.5 m)
Longest span45 ft (13.7 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,019 (2022)
Projected traffic1,019 by 2044
Trucks7%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Center ST over Deer Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Center ST over Deer 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 Center ST over Deer Creek carry?

About 1,019 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Center ST over Deer Creek?

The structure is 159 ft (48.5 m) long with a longest span of 45 ft (13.7 m) and a deck 32 ft wide.

Who owns Center ST over Deer Creek?

It is owned by the County Highway Agency.