US Bridges

Hill Road East over State Route 29

Fair

Lake County, California · 01-LAK-029-R43.75 · Structure no. 14 0039

Built
1972
53 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
317 ft
2 main spans
Daily traffic
485
1998 count
Owner
State
State Highway Agency

About this bridge

Hill Road East over State Route 29 is a prestressed concrete continuous box beam or girders - multiple carrying Hill Road East over State Route 29 in Lake County, California. It was built in 1972, so it is 53 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 485 vehicles a day, roughly 2% of them trucks, projected to reach 1,664 by 2046. The structure is 317 ft (96.6 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesHill Road East
CrossesState Route 29
Location01-LAK-029-R43.75
RouteCounty Highway 0
Coordinates39.06506, -122.93237
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating31.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length317 ft (96.6 m)
Longest span172 ft (52.4 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic485 (1998)
Projected traffic1,664 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Hill Road East over State Route 29 built?

It was built in 1972, making it 53 years old in 2025.

What condition is Hill Road East over State Route 29 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 October 2024.

How much traffic does Hill Road East over State Route 29 carry?

About 485 vehicles per day (1998 count), of which roughly 2% are trucks.

How long is Hill Road East over State Route 29?

The structure is 317 ft (96.6 m) long with a longest span of 172 ft (52.4 m) and a deck 34 ft wide.

Who owns Hill Road East over State Route 29?

It is owned by the State Highway Agency.