US Bridges

SH 21 over Allen Creek

Fair

Cherokee County, Texas · 0.35 MI W of FM 241 · Structure no. 100370011805065

Built
1958
67 years old
Condition
Fair
inspected January 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
2,309
2021 count
Owner
State
State Highway Agency

About this bridge

SH 21 over Allen Creek is a concrete culvert carrying SH 21 over Allen Creek in Cherokee County, Texas. It was built in 1958, so it is 67 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 2,309 vehicles a day, roughly 15% of them trucks, projected to reach 3,233 by 2041. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSH 21
CrossesAllen Creek
Location0.35 MI W of FM 241
RouteState Highway 21
CountyCherokee County
StateTexas
Coordinates31.66297, -95.00018
Functional classRural Minor Arterial

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 inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadOther
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,309 (2021)
Projected traffic3,233 by 2041
Trucks15%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 21 over Allen Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is SH 21 over Allen 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 January 2023.

How much traffic does SH 21 over Allen Creek carry?

About 2,309 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is SH 21 over Allen Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns SH 21 over Allen Creek?

It is owned by the State Highway Agency.