US Bridges

Local over Mill Creek

Good

Cedar County, Iowa · 082021406 · Structure no. 000000000104642

Built
1992
33 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
141 ft
3 main spans
Daily traffic
130
2021 count
Owner
County
County Highway Agency

About this bridge

Local over Mill Creek is a prestressed concrete stringer/multi-beam or girder carrying Local over Mill Creek in Cedar County, Iowa. It was built in 1992, so it is 33 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 130 vehicles a day, projected to reach 130 by 2043. The structure is 141 ft (43 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesLocal
CrossesMill Creek
Location082021406
RouteCounty Highway 0
StateIowa
Coordinates41.90988, -91.05001
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating78.6 US tons
Inventory rating42.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length141 ft (43 m)
Longest span53 ft (16.2 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2021)
Projected traffic130 by 2043
Trucks0%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Mill Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Local over Mill Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Local over Mill Creek carry?

About 130 vehicles per day (2021 count).

How long is Local over Mill Creek?

The structure is 141 ft (43 m) long with a longest span of 53 ft (16.2 m) and a deck 33 ft wide.

Who owns Local over Mill Creek?

It is owned by the County Highway Agency.