US Bridges

Cm Allen Pkwy over Purgatory Creek

Fair

Hays County, Texas · 0.45 MI NW of IH 35 · Structure no. 141060B00145001

Built
1978
47 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
93 ft
3 main spans
Daily traffic
2,888
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cm Allen Pkwy over Purgatory Creek is a concrete stringer/multi-beam or girder carrying Cm Allen Pkwy over Purgatory Creek in Hays County, Texas. It was built in 1978, so it is 47 years old, older 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 2,888 vehicles a day, roughly 1% of them trucks, projected to reach 12,000 by 2034. The structure is 93 ft (28.3 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCm Allen Pkwy
CrossesPurgatory Creek
Location0.45 MI NW of IH 35
RouteCity Street 0
CountyHays County
StateTexas
Coordinates29.87926, -97.93625
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length93 ft (28.3 m)
Longest span30 ft (9.2 m)
Deck width55 ft (16.7 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,888 (2020)
Projected traffic12,000 by 2034
Trucks1%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$10,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cm Allen Pkwy over Purgatory Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Cm Allen Pkwy over Purgatory 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 June 2024.

How much traffic does Cm Allen Pkwy over Purgatory Creek carry?

About 2,888 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Cm Allen Pkwy over Purgatory Creek?

The structure is 93 ft (28.3 m) long with a longest span of 30 ft (9.2 m) and a deck 55 ft wide.

Who owns Cm Allen Pkwy over Purgatory Creek?

It is owned by the City or Municipal Highway Agency.