US Bridges

Bluff RD over Lost Creek

Good

Scott County, Iowa · 080E52901 · Structure no. 000000000303741

Built
1985
40 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
153 ft
2 main spans
Daily traffic
1,060
2022 count
Owner
County
County Highway Agency

About this bridge

Bluff RD over Lost Creek is a prestressed concrete stringer/multi-beam or girder carrying Bluff RD over Lost Creek in Scott County, Iowa. It was built in 1985, so it is 40 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 1,060 vehicles a day, roughly 12% of them trucks, projected to reach 1,060 by 2043. The structure is 153 ft (46.6 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesBluff RD
CrossesLost Creek
Location080E52901
RouteCounty Highway 0
CountyScott County
StateIowa
Coordinates41.71368, -90.41216
Functional classRural Major 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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.1 US tons
Inventory rating31.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length153 ft (46.6 m)
Longest span76 ft (23.2 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,060 (2022)
Projected traffic1,060 by 2043
Trucks12%
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 Bluff RD over Lost Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Bluff RD over Lost 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 Bluff RD over Lost Creek carry?

About 1,060 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Bluff RD over Lost Creek?

The structure is 153 ft (46.6 m) long with a longest span of 76 ft (23.2 m) and a deck 31 ft wide.

Who owns Bluff RD over Lost Creek?

It is owned by the County Highway Agency.