US Bridges

Pk 693 410th ST over Lost Branch Creek

Fair

Lucas County, Iowa · 6 Mi.S .1 E of 34/280 Av · Structure no. 000000000225320

Built
1900
125 years old, rebuilt 1995
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
56 ft
3 main spans
Daily traffic
21
2022 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Pk 693 410th ST over Lost Branch Creek is a wood or timber stringer/multi-beam or girder carrying Pk 693 410th ST over Lost Branch Creek in Lucas County, Iowa. It was built in 1900 and reconstructed in 1995, so it is 125 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 21 vehicles a day, projected to reach 21 by 2043. The structure is 56 ft (17.1 m) long and 17 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesPk 693 410th ST
CrossesLost Branch Creek
Location6 Mi.S .1 E of 34/280 Av
RouteCounty Highway 0
CountyLucas County
StateIowa
Coordinates40.91264, -93.21044
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating31.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length56 ft (17.1 m)
Longest span18 ft (5.5 m)
Deck width17 ft (5.2 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2022)
Projected traffic21 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pk 693 410th ST over Lost Branch Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1995.

What condition is Pk 693 410th ST over Lost Branch Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does Pk 693 410th ST over Lost Branch Creek carry?

About 21 vehicles per day (2022 count).

How long is Pk 693 410th ST over Lost Branch Creek?

The structure is 56 ft (17.1 m) long with a longest span of 18 ft (5.5 m) and a deck 17 ft wide.

Who owns Pk 693 410th ST over Lost Branch Creek?

It is owned by the State Park, Forest, or Reservation Agency.