US Bridges

Mayall Trail over Onion Creek Trib

Fair

Travis County, Texas · 0.32 MI East IH 35 · Structure no. 142270VD0988001

Built
2023
2 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
37 ft
3 main spans
Daily traffic
195
2020 count
Owner
County
County Highway Agency

About this bridge

Mayall Trail over Onion Creek Trib is a concrete culvert carrying Mayall Trail over Onion Creek Trib in Travis County, Texas. It was built in 2023, so it is 2 years old, younger than the Texas average of 44.4 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 195 vehicles a day, roughly 3% of them trucks, projected to reach 250 by 2032. The structure is 37 ft (11.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMayall Trail
CrossesOnion Creek Trib
Location0.32 MI East IH 35
RouteCity Street 0
CountyTravis County
StateTexas
Coordinates30.12976, -97.79389
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length37 ft (11.2 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic195 (2020)
Projected traffic250 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mayall Trail over Onion Creek Trib built?

It was built in 2023, making it 2 years old in 2025.

What condition is Mayall Trail over Onion Creek Trib 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 June 2024.

How much traffic does Mayall Trail over Onion Creek Trib carry?

About 195 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Mayall Trail over Onion Creek Trib?

The structure is 37 ft (11.2 m) long with a longest span of 8 ft (2.4 m).

Who owns Mayall Trail over Onion Creek Trib?

It is owned by the County Highway Agency.